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Viewing 1 to 30 of 109896
2017-07-10
Technical Paper
2017-28-1967
Senthil Ram N D, Thulasirajan Ganesan, 1Lt Praveen Chakrapani Rao
Global Automotive Industry is mandated with the task of emission reduction and mileage improvements. One of the key areas being looked at from mileage standpoint is light weighting. While Aluminum body is replacing Steel is many vehicular applications, in Starter Motor Aluminum is the key component. Therefore, any attempt at light weighting must consider Aluminum. A Starter motor fits directly on to the engine. Aluminum being the housing material provides structural stability. It also performs the role of heat dissipation being a good thermal conductor and source of electrical ground path. Aluminum constitutes 20 – 25% of Starter motor weight. Any significant weight reduction cannot be achieved unless we look at the components made of Aluminum, namely die cast Housing and End plate. The alternatives considered in this study include engineered plastics, magnesium alloy and composites.
2017-07-10
Technical Paper
2017-28-1969
Senthil Ram N D, Thulasirajan Ganesan, 1Lt Praveen Chakrapani Rao
Magnesium alloy current being used for automotive sector and are being significantly used for manufacturing engine block as offering higher power to weight ratio to the vehicle. In this context, the magnesium alloy has been used in the replacement of aluminium alloy for the starter housing which in turn increase the power to weight ratio of the motor. Considering the operation condition of starter motor in the engine of the vehicles, the starter motor are being exposed to the harsh environment, where its system are being tested for Noise, Vibration and Harshness. In this paper, the magnesium alloy housing is used to study the vibration and noise developed in the starter motor and the same is compared with the noise and vibration of the motor when it being used with Aluminium alloy Housing. First, the vibration study is carried out for the housing part alone to capture the resonant frequency of the both housing alloy say, Aluminium and Magnesium.
2017-07-10
Technical Paper
2017-28-1976
Suresh Kumar N
The utility of tractors in India has grown and is growing. Other than in agricultural area, it finds use in non-agricultural and construction/ earthmoving applications like loaders, dozers, power source, etc. The tractors that are subjected to heavy duty cycles are mostly with conventional dry type clutches. These types of dry clutch when operated in heavy application generate large amount of heat within shorter period of time on the surface of friction discs. This increase in disc surface temperature weakens the friction material property & bonding element leading to deterioration and decreasing the life of clutch. This curtails the clutch life extensively and is a big challenge to farmers and tractor users. The frequent clutch failures not only increases the operating cost, but also the servicing of clutches in the tractor fitted with heavy attachments leads to a higher downtime and service cost.
2017-07-10
Technical Paper
2017-28-1971
Thirumalai kannan Kandaswamy
This aim of this paper is to investigate the tribochemical property of chemically modified jojoba seed oil with the additive of graphene nanoparticle as a blend in mineral oil for the use of engine oil lubricant. Jojoba oil is synthesized using epoxidation, hydroxylation, and transesterification process. Oil samples are formulated with various blends of chemically modified jojoba oil to the base engine oil with the 0.05 to 0.75 % wt. of carbon based nanoparticle particles. Tribological tests were conducted on a four-ball tribometer under extreme pressure and anti-wear conditions for formulated blend and Pin on disc tribometer for wear and friction measurement. Results show that under extreme load conditions the blends of 30% jojoba oil show lesser wear scar diameter when compared with the other blends. And also the addition of graphene nanoparticles could enhance the lubrication properties of their blends.
2017-07-10
Technical Paper
2017-28-1940
Ram kishore Sankaralingam, Venugopal Thangavel, Saleel Ismail
The future of an internal combustion engine depends on how intelligently it controls the emission and monitors the efficiency in accordance with its working conditions. To gratify the emerging emission norms, an engine has to switch over to different modes of operation from its conventional spark ignition or compression ignition mode. One among the efficient modes which is being widely researched for its low NOx capability is called Reactivity Controlled Compression Ignition (RCCI). RCCI uses a port injected fuel similar to SI engines and gets it compression ignited similar to CI engines. Generally, two fuels of different reactivities will be chosen for this technique. RCCI can be achieved either by injecting one fuel through port and one fuel through in cylinder or both the fuels through port. In this research work, a simple and cost effective electronic fuel injection (EFI) technique was established to handle both the single and dual port injection systems.
2017-07-10
Technical Paper
2017-28-1943
Anil Kumar Jaswal, Rajasekhar MV, Pradeep C
This paper details about the approach and challenges in converting a conventional vehicle platform designed for diesel/gasoline powertrain into an electrified one. It is not always feasible to accommodate electric powertrain in conventional platforms based on the target requirements. Electrification of conventional vehicles will cut back dependence on fossil fuels, emission of greenhouse gases and emission of pollutants. Fossil fuel are going to be depleted in few decades. Moreover, the emission from traditional vehicle has raised a huge threat to the atmosphere. Auto OEM's have recognized that electric drive vehicles are critical to the future of the industry. However, some difficulties exist to more noteworthy selection: the view of cost, EV range, access to charging, potential impacts, and absence of open mindfulness about the accessibility and common sense of these vehicles.
2017-07-10
Technical Paper
2017-28-1954
Premkumarr Santhanamm, K. Sreejith, Avinash Anandan
A local and global environmental concern regarding automotive emissions has led to optimize the design and development of Power train systems for IC engines. Blow-by and Engine oil consumption is an important source of hydrocarbon and particulate emissions in modern IC engines. Great efforts have been made by automotive manufacturers to minimize the impact of oil consumption and blow-by on incylinder engine emissions. This paper describes a case study of how simulation played a supportive role in improving piston ringpak assembly. The engine taken up for study is a six cylinder, turbocharged, water cooled diesel engine with a peak firing pressure of 140 bar and developing a power output of 227 KW at 1500 rpm. This paper reveals the influence of stepped land, top groove angle, ring face profile, twist features with regard to tweaking of Blow-by & LOC. Relevant design inputs of engine parameters were provided by the customer to firm up the boundary conditions.
2017-07-10
Technical Paper
2017-28-1937
Jyotirmoy Barman, Prateek Arora, Kumar Patchappalam
Air Pollution is a major concern in our country due to which Indian Government has taken a decision to move from BS-IV to BS-VI which is nearly 90% reduction in NOx and 50% in particulate matter along with addition of particulate number regulation for BS-VI in comparison to BS-IV norms in very short span of time. Vehicle manufacturers are also having the challenge to produce low cost and fuel efficient product with BS-VI solution in order to meet tightening emission regulations and increasing needs of lower fuel consumption. Detailed study is done with different approaches to meet BS-VI emission which is elaborately explained in different aspect of engine design and after treatment parameter with its pros and cons. After Treatment selection plays an important role in engine development to meet stringent emission legislations and customer demands. Strategies for BS-VI were described with the advantage and drawbacks for after treatment selection.
2017-07-10
Technical Paper
2017-28-1945
Jyotirmoy Barman, Himanshu Gambhir, Rizwan Khan
During the last few decades, concerns have grown on the negative effects that diesel particulate matter has on health. Because of this, particulate emissions were subjected to restrictions and various emission-reduction technologies were developed. It is ironic that some of these technologies led to reductions in the legislated total particulate mass while neglecting the number of particles. Focusing on the mass is not necessarily correct, because it might well be that not the mass but the number of particles and the characteristics of them (size, composition) have a higher impact on health. During the diesel engine combustion process, soot particles are produced which is very harmful for the atmosphere. Particulate matter is composed of much organic and inorganic composition which was analyzed after the optimization of SCR and EGR engine out.
2017-07-10
Technical Paper
2017-28-1955
Peda Chowdaiah Korlapati
In commercial vehicles, the greatest challenge is to improve the fuel economy and reduce emissions. The Aerodynamic drag control is one of the best ways to do the same. In Tractor-trailer assembly, the gap between the cabin and trailer and also rear end of the trailer are the critical areas which will affect the coefficient of drag drastically. Also the low pressure at the rear end of the trailer is one of the reasons for rear collision of trucks with other vehicles. The main objective of this work is to incorporate the inflatable boat tail at the rear-end of the trailer to reduce the drag coefficient and also to act as energy absorber in case of rear impact. The generic model of commercial vehicle with various boat tails is designed in CREO software and both steady and unsteady analysis are carried out by using ANSYS Fluent under various conditions from 0 to 6 degree wind directions.
2017-07-10
Technical Paper
2017-28-1968
M Ananthasaravanan, R. Rajendran, N Ravikumar, K Venkateswaran
Sheet metal forming plays a major role in automobile and automobile spare parts manufacturing industries. The objective is to determine the forming limit diagram for the bimetal sheet so as to predict the formability/ductility. Only few researchers have worked in the forming limit of bimetal sheet. In this work, bimetal sheet with two different combinations of copper with steel and aluminium with steel were used. Experimental and numerical analysis were carried out to find the forming limit of the material. Erichsen cupping test were performed as per ASTM E2218 standards to evaluate the ability of metallic sheets and strips to undergo plastic deformation in stretch forming. Numerical simulation using ANSYS and LS DYNA were carried out to find the forming limit. Preliminary tests like tensile test, micro hardness and impact test were carried out to find the mechanical properties of the bimetal material.
2017-07-10
Technical Paper
2017-28-1988
G Ramanjaneyulu, R Rajendran
Polyoxymethylene (POM) is a widely used engineering thermoplastic material, which exhibits good fatigue resistance, creep resistance and high impact strength. It has low friction coefficient due to the flexibility of the linear molecular chains. It has good wear-resistant properties because of its high crystallinity and high bond energy. Molybdenum disulfide (MoS2) is particularly important for solid lubrication or as an additive for lubricating oils and greases. Graphite is used in industrial applications for their self-lubricating and dry lubricating properties. POM/Graphite and POM/MoS2 composites were prepared with varying proportions using twin screw extruder. The samples were prepared by injection moulding machine. Impact test and wear tests were conducted on the samples. The impact strength of the samples was measured by impact testing machine. The impact results show that significant improvement in the impact strength for graphite and MoS2 fillers.
2017-07-10
Technical Paper
2017-28-1958
Jyothivel Giridharan, Gokul Kumar
Bio-fuels potentially represent a more environmentally friendly alternative to fossil fuels as they produce fewer greenhouse gas emissions when burned. Ethanol is one such bio-fuel alternative to the conventional fossil fuels. Towards the initiative of sustainable transportation using alternative fuels, it is attempted to develop an ethanol powered engine for commercial vehicles and this paper attempts to explain the 1D thermodynamic simulation carried out for predicting the engine performance and combustion characteristics, as a part of the engine development program. Engine simulation is becoming an increasingly important engineering tool for reducing the development cost and time and also helps in carrying out various DOE iterations which are rather difficult to be conducted experimentally in any internal combustion engine development program. AVL Boost software is used for modelling and simulation.
2017-07-10
Technical Paper
2017-28-1963
Pavan Bharadwaja Bhaskar, S Srihari
In recent times control of emissions has been the major issue resulting strict emission norms. Oxides of nitrogen (NOx) reduction is a major concern over the years and diesel engine has big hand when compared to gasoline. Several promising techniques have been developed, homogeneous charge compression ignition (HCCI) is one of the effective ways to trim down the NOx emissions by keeping thermal efficiency identical to diesel engine. However, this concept lags in controlling CO and HC emissions. Methanol fuel blends are chosen as it significantly improves the combustion quality. Oxygen content in methanol drags attention as it can compensate HC and CO emissions caused by HCCI mode of combustion. In this work conventional diesel engine is converted into HCCI engine by mounting diesel vaporizer at inlet manifold to attain homogenous mixture. An experimental investigations have been carried out to analyse performance and emission characteristics using different methanol blends.
2017-07-10
Technical Paper
2017-28-1987
Vigneshwaran K, Palanivendhan Murugadoss, Gokul K. Gokul
The main objective is to Extraction of cellulose nanofibers using Mechanical ball milling Process and Chemical Treatment Methods. The Nanofibers are incorporated with Epoxy Matrix to make composite plates. Mechanical properties such as tensile strength, Flexural strength, and impact energy are evaluated. Mechanical Extraction method such as Ball Milling is carried out for 2 hours and 5hours. Using SEM image the ball milling powder are visualized to determine the diameter. In Chemical Treatment Methods three Different kinds of Treatment are performed namely sodium Hypochlorite, Sodium Hypochlorite, and Acetic acid. Using Handlay up method these fibers are incorporated into the epoxy matrix to fabricate composite plates. The ball milling process is carried out without any chemical Treatment process. Increases in milling process result in the chance of occurring Nano fibers. In my study Nano sized fiber is not obtained, only the 28 microns fibers are converted into 3-4 microns.
2017-07-10
Technical Paper
2017-28-1935
Praveen V V, P Baskara Sethupathi
According to FSAE 2017-18 Rule Book, ARTICLE 3, IC3.2 and IC3.3 state that the maximum sound level should not exceed 110 dBC at 7500 RPM and 103 dBC at Idle (for the KTM 390 engine, which has 60 mm stroke length). Being a race car the space and weight constrains are there for the muffler and but the major concern is to reduce the backpressure of the muffler, so that maximum torque can be achieved from the engine. So the active muffler which works as a normal reflective muffler till the 7500 RPM range, after which an electronic controlled throttle mechanism is used to reduce the backpressure (since after 7500 RPM the noise level doesn't matter in FSAE) by using tach signal from the engine to control the throttle. The electronic throttle will be controlled using an ardino board to change the throttle opening angle and control the backpressure, with respect to the Engine RPM. This ensures that Noise level rules are met without compromising on the performance.
2017-07-10
Technical Paper
2017-28-1978
Stanley M Jerome, Senthilkumar Sundararaj
The process of building the engine and its subsequent systems involves usage of metals & its compounds. The current technique is in which the fuel is burned in a combustion chamber wherein the actual combustion progression and its subsequent gases are surrounded by metallic compounds. The part of the heat energy generated in the system is forced to be removed by means of cooling to protect the structural integrity of the engine; nearly 30% of the energy is lost due to cooling. However limitation in structural behaviour of metallic materials and limited resource for the production of metals and alloys with superior high temperature structural causes the search for new alternate materials like ceramics, organic synthetic plastic, etc. Thermal Barrier Coating is an attractive and promising method in providing thermal insulation for the engine components due to its good thermo-mechanical properties.
2017-07-10
Technical Paper
2017-28-1921
Jyotirmoy Barman
Engine down speeding is rapidly picking up momentum in the many segment of world market. Numerous engines down speeding packages from OEM have been tailored to take advantage of the increased efficiencies associated with engine down speeding. Running at a lower rpm provides numerous advantages. The most obvious of these is reduced fuel consumption, since the engine can spend more time running within its optimum efficiency range. By down speeding, the engine is made to run at low speeds and with high torques. For the same power the engine is operated at higher specific load (BMEP) which results in higher efficiency and reduced fuel consumption (BSFC). The reasons for increased fuel efficiency are reduced engine friction due to low piston speeds, reduced relative heat transfer and increased thermodynamic efficiency.
2017-07-10
Technical Paper
2017-28-1923
Satish Mudavath, Ganesh Dharmar, Shyam Somani
Digital human models have greatly enhanced design for the automotive environment. The major advantage of the models today is their ability to quickly test a broad range of the population within specific design parameters. The need to create expensive prototypes and run time consuming clinics can be significantly reduced. However, while the anthropometric databases within these models are comprehensive, the ability to position the manikin’s posture is limited and needs lot of optimization in to it. This study enhances the postures and there seating layout for occupants considering their most comfortable position. While all the Occupants are accommodated to their respective positions which finally can be stacked up for space assessments. Understanding the usage patterns of users with respect to seating will have huge impact on setting the target for overall vehicle size, including the vehicle length and luggage compartment.
2017-07-10
Technical Paper
2017-28-1932
Ganesh Dharmar, Ravichandrika Bhamidipati, Satheesh Kumar
Traffic awareness of the driver is one of the prime focus in terms of pedestrian and road safety. Driver experience plays a significant role and driving requires careful attention to changing environments both within and outside the vehicle. Any lapse in driver attention from the primary task of driving could potentially lead to an accident. It is observed that, lack of attention on the ongoing traffic and ignorant about the traffic information such as traffic lights, road signs, traffic rules and regulations are major cause for the vehicle crash. Traffic signals & signage are the most appropriate choice of traffic control for the intersection, it is important to ensure that driver can see the information far away from the intersection so that he/she can stop safely upon viewing the yellow and red display. Then, upon viewing the signal operations and conditions the motorist can stop his/her vehicle successfully before entering the intersection.
2017-07-10
Technical Paper
2017-28-1973
Sakthivel B, Sridhar R, Srinivasan B, J Suresh Kumar
Solenoids are type of inductive actuators extensively used in mobility industries as flow control valves. Now a day, the conventional mechanical actuators are replaced by solenoids, since the solenoids have high precision control and faster response within a controlled magnetic field. Solenoids are classified into two types based on the mode of operation. Solenoid is operated either in ON/OFF mode for switching applications or in Pulse Width Modulation (PWM) for high frequency applications. A solenoid consists of two critical parts, one is the reciprocating plunger and another is the static valve case. During higher number of repeated operations, the solenoid plunger hits the valve case and induces wear on the seating surface. The solenoids are also exposed to the corrosive environment in some applications.
2017-07-10
Technical Paper
2017-28-1981
Sakthinathan Ganapathy, Anand Kumar Appancheal, Raja Velusamy
Heat energy produced in the combustion chamber of an Internal Combustion Engine cannot be completely converted into useful work due to heat transfer losses. This leads to a fall in the performance of the engine. To overcome this, pistons have been coated with different materials like Molybdenum Disulphide, Chromium Nitrides and other materials. These thermal barrier coatings have improved the performance of the engine by preventing heat loss. In this experiment, the performance and emission characteristics of a Tungsten Carbide coated piston was investigated. Tungsten Carbide was coated on the piston surface by PVD Process. The Tungsten Carbide coated piston was tested in an MK20 engine using an Eddy Current Dynamometer. The performance of uncoated and tungsten carbide coated pistons were compared and analyzed. An increase in combustion chamber temperature was obtained while using WC coated piston, which was observed by increased exhaust gas temperature.
2017-07-10
Technical Paper
2017-28-1925
Asif Basha Shaik Mohammad, Ravindran V, Nageshwara Rao P
The automotive market has seen a steady increase in customer demands for quiet and more comfortable Tractors. High noise at Operator Ear Level (OEL) of tractor is the major cause of fatigue to the operator. With growing competition, and upcoming legislative requirement there is ominous need for the agricultural tractor manufacturers to control noise levels. Objective of this study is noise reduction on agricultural tractor by stiffening sheet metal components. The design and analysis plays a major role for determining the root cause for the problem. Once the problem and its root cause were well defined, the solution for addressing the problem would be made clear. The engine excitation frequency and Sheet metal Components such as Fender and Foot rest natural frequency were coming closer and are leading to resonance.
2017-07-10
Technical Paper
2017-28-1944
Asif Basha Shaik Mohammad, Ravindran V, Nageshwara Rao P
The vibration and acoustic behaviour of the internal combustion engine is a highly complex one, consisting of many components that are subject to loads that vary greatly in magnitude and which operate at a wide range of speeds. The interaction of these components and the excitation of resonant modes of vibration is a major problem for the powertrain engineer when optimising the noise and vibration characteristics of the engine. This paper summarises a study that has been undertaken to assess and optimise the dynamic behaviour of a current production diesel engine with the objective of reducing radiated noise from the engine. The dynamic behaviour of the diesel engine has been assessed using simulation tools. The dynamic analysis will predict the forces and displacements at each of the nodes of the model by forced response analysis. Predicted results and experimentally measured values were found to be in close agreement.
2017-07-10
Technical Paper
2017-28-1984
Naveed Hussain
Importance of fibers as reinforcements in metal matrices has long been recognized. It is only because of this realization that many industries like aerospace rely entirely on advanced composite materials for their conflicting demands of high performance and lightweight materials. However most of the work in these areas has been limited or confined to patents created by the defense and automotive sectors. The efforts to commercialize these materials have been restricted due to high cost of the reinforcements and the manufacturing processes used. In this work an attempt has been made to infiltrate the Carbon fibers by imparting Nickel and Salt based coatings to fiber surfaces with commercial purity aluminum and A356 alloy. Infiltration has been performed in ambient atmosphere and also under vacuum. The carbon fibers have been successfully infiltrated with K2ZrF6 salt coatings and were hot pressed to required shapes.
2017-07-10
Technical Paper
2017-28-1977
M Malathi, J Herbert Mabel, R. Rajendran, N Gowrishankar
Piston rings are used to seal the cavity formed between the piston and the cylinder in order to allow the engine to operate efficiently. The piston rings wear out due to constant rubbing action with cylinder wall and also have to withstand high temperature. This has lead to the development of new piston ring coatings with good wear properties under increasingly challenging running conditions. To improve the wear resistance of the piston rings several coating techniques are employed. One such technique is Ni-P composite coating which is widely used in the automotive industry. Reinforcement of ceramic particles enhances the tribological and mechanical properties of the coating. The base material of the piston ring used in this study is hardened carbon steel. The main objective is to develop an optimum Ni-P composite coating on piston ring to improve wear and friction resistance.
2017-07-10
Technical Paper
2017-28-1933
Alberto Boretti
The contribution analyses the Volkswagen emission scandal and the impacts on the perspectives of the internal combustion engine, the battery based electric car and the hydrogen based mobility. The operation of the United States Environmental Protection Agency, Volkswagen and the United States prosecutor sparked by the action of the International Council on Clean Transportation is forcing the Original Equipment Manufacturers towards an everything but rationale immediate transition to the battery based electric mobility. This transition voids the value of any improvement of the internal combustion engine (ICE), especially in the lean burn, compression ignition (CI) flavor and of a better hybridization of powertrains, both options that have much better short term perspectives than the battery based electric car.
2017-07-10
Technical Paper
2017-28-1939
Maruti Patil, Penchaliah Ramkumar, Shankar Krishnapillai
Gearbox design is a very complicated and highly specialized task. Gearbox plays an important role in the system of power transmission. It finds its application in various machines, such as stationary engines, bicycles, cars, windmills, etc. Minimum weight and high-efficiency gearboxes with the good service life is the prime necessity of today’s high-performance power transmission systems such as automotive and aerospace. To achieve these objectives, optimum gearbox parameters should be calculated. Hence, this problem to optimize the gearboxes is subjected to a considerable amount of interest. To accomplish these objectives, in this paper, two generalized objective functions for two stage spur-gearbox are formulated, first one is for minimum volume and the second one is to maximize the power transmitted by the gearbox considering regular mechanical as well as the tribological constraints (Scuffing and Wear).
2017-07-10
Technical Paper
2017-28-1942
Rajvardhan Nalawade
The exhaust system of a vehicle is an integral part as it is responsible for reducing the noise of the exhaust gases and controlling the emissions as well. Mufflers are particularly the sub part of an exhaust system that reduce the sound level. Their geometry and size are meticulously calculated and decided so as to increase destructive interference of sound waves and their absorption by sound absorbent material packed around it. There are five types of basic mufflers which will be compared for their transmission losses. For this analysis of transmission losses, a software called Ricardo Wave Build has been used. Transmission loss is basically, the difference between the energy of the incoming charge and the energy of the outgoing charge of gases. So, more is the transmission loss, more efficient and productive is the muffler. Based upon the transmission loss characteristics, the mufflers are paired with their corresponding applications.
2017-07-10
Technical Paper
2017-28-1947
Suresh Kumar Kandreegula, Kamal Rohilla, Naveen Sukumar, Kunal Kamal
A propeller shaft is a mechanical component of drive train that connects transmission to drive wheels/axle with the goal to transfer rotation and torque. It is used when the direct connection between transmission and drive axle is not possible due to large distance between their respective assigned design spaces. In commercial vehicles especially in heavy duty (GVW/GCW>15 tons) a single piece propeller shaft is seldom used due to its inherent disadvantages and therefore, most if not all, of the setups consists of multiple pieces of propeller shaft which are directly mounted on to frame cross members with the help of mounting brackets. As such the mounting bracket assembly undergoes various dynamic and static loading conditions and should be able to withstand these loads. This paper will focus on the FEA analysis of propeller shaft mounting assembly system. Furthermore, these results will be correlated with physical tests results collected from test rig and physical vehicle testing.
Viewing 1 to 30 of 109896

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