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Training / Education
2015-08-24
Improved understanding and control of ignition and thereby combustion are critical in dealing with the problems of pollutants formation, engine performance, and fuel economy. This seminar will provide you with basic knowledge and recent advances in combustion-initiation (ignition) issues to more intelligently evaluate and harness their potentials. Thermodynamic and fluid mechanical properties of the unburned charge near the spark plug and at the time of ignition strongly affect the quality of the combustion and therefore the emission of the pollutants from the engine. Furthermore, a weak ignition limits engine performance and drivability.
Event
2015-06-22
This session includes papers in the areas of static, dynamic, and fatigue characterization of elastomers, bushings, mounts and shock absorbers used in the mobility industry. Particular emphasis is given to new and innovative analysis and testing methodologies to quantify the non-linear properties of these systems in addition to the effects of temperature, frequency, and aging. Papers dealing with specific applications and case studies of existing methodologies are also welcome.
Event
2015-06-22
This session is focused on base engine, mounts, accessories, fuel injection system, combustion system, transmission related design or development noise and vibration topics. The papers of this session will have both experimental and analytical approaches to problem solving.
Training / Education
2015-06-08
The advent of digital computers and the availability of ever cheaper and faster micro processors have brought a tremendous amount of control system applications to the automotive industry in the last two decades. From engine and transmission systems, to virtually all chassis subsystems (brakes, suspensions, and steering), some level of computer control is present. Control systems theory is also being applied to comfort systems such as climate control and safety systems such as cruise control or collision mitigation systems. This seminar begins by introducing the highly mathematical field of control systems focusing on what the classical control system tools do and how they can be applied to automotive systems.
Event
2015-03-23
Training / Education
2015-03-23
Heat transfer affects the performance, emissions and durability of the engine as well as the design, packaging, material choice and fatigue life of vehicle components. This course covers the broad range of heat transfer considerations that arise during the design and development of the engine and the vehicle with a primary focus on computational models and experimental validation covering the flow of heat from its origin in the engine cylinders and its transfer via multiple paths through engine components. Specifically, the course will cover heat transfer design considerations related to the following: engine cooling and lubrication systems as well as bay-to-bay breathing; exhaust system and after-treatment components; tail pipe gas temperatures, as well as thermal interactions between the engine and its exhaust system with the components in the vehicle under-hood and under-body; turbochargers; passenger cabin HVAC system, including windshield de-icing; battery cooling; heat exchangers and challenges associated with predicting thermal mechanical fatigue life of components.
Training / Education
2015-03-12
Vehicle functional requirements, emission regulations, and thermal limits all have a direct impact on the design of a powertrain cooling airflow system. Given the expected increase in emission-related heat rejection, suppliers and vehicle manufacturers must work together as partners in the design, selection, and packaging of cooling system components. An understanding and appreciation of airflow integration issues and vehicle-level trade-offs that effect system performance are important to the team effort. The severe duty cycles, minimal ram air, and sometimes unconventional package layouts present unique challenges.
Event
2014-12-11
Incremental solutions to meet ever-challenging emission regulations are gaining popularity, including start-stop control. This panel will explore start-stop architectures, and develop the benefits and challenges.
Training / Education
2014-12-03
Turbocharging is already a key part of heavy duty diesel engine technology. However, the need to meet emissions regulations is rapidly driving the use of turbo diesel and turbo gasoline engines for passenger vehicles. Turbocharged diesel engines improve the fuel economy of baseline gasoline engine powered passenger vehicles by 30-50%. Turbocharging is critical for diesel engine performance and for emissions control through a well designed exhaust gas recirculation (EGR) system. In gasoline engines, turbocharging enables downsizing which improves fuel economy by 5-20%. This web seminar will explore turbocharging for gasoline and diesel (heavy and light duty) engines, including the fundamentals of turbocharging, design features, performance measures, and matching and selection criteria.
Event
2014-11-25
Training / Education
2014-11-20
Engine valvetrain systems have become more capable and increasingly more compact in the quest to improve efficiency. The developments parallel the advancements in other key engine components such as fuel injection or spark systems, turbocharging, aftertreatment, base engine and controls. While the gasoline sector has seen a steady rise in the adoption of Variable Valve Actuation (VVA), Diesel systems have lagged behind and only a few systems have seen production. The level of VVA activity however in the Diesel sector is beginning to increase as tighter regulations of CO2 emissions approach. Valve control plays a strong role in a number of key areas: turbocharger systems, allowing for better optimization matching across wide engine operating flows; enabling advanced combustion strategies where control over the charge mass and temperature are important; and cold start, where valve timing can be extremely effective for engine warm up compared with other strategies that rely on additional fueling.
Event
2014-11-19
Papers in this session are related to design, development and testing of new or innovative electronic controls or control systems for internal combustion engines. Topics may include hardware, software and algorithm/function innovations as well as the associated sensors or actuators employed in the control system. Applications may range from very simple systems for 1-cylinder engines to more complex systems for high-performance or multi-cylinder engines.
Event
2014-11-19
Papers in this session are related to design, development and testing of new or innovative electronic controls or control systems for internal combustion engines. Topics may include hardware, software and algorithm/function innovations as well as the associated sensors or actuators employed in the control system. Applications may range from very simple systems for 1-cylinder engines to more complex systems for high-performance or multi-cylinder engines.
Event
2014-11-19
This session focuses on hardware attached to the engine such as support systems, injectors, EGR valves, manifolds, turbo-chargers, water pumps, and ignition systems.
Event
2014-11-19
This session focuses on hardware attached to the engine such as support systems, injectors, EGR valves, manifolds, turbo-chargers, water pumps, and ignition systems.
Event
2014-11-18
Papers in this session are related to design, development and testing of new or innovative electronic controls or control systems for internal combustion engines. Topics may include hardware, software and algorithm/function innovations as well as the associated sensors or actuators employed in the control system. Applications may range from very simple systems for 1-cylinder engines to more complex systems for high-performance or multi-cylinder engines.
Event
2014-11-18
Papers in this session are related to design, development and testing of new or innovative electronic controls or control systems for internal combustion engines. Topics may include hardware, software and algorithm/function innovations as well as the associated sensors or actuators employed in the control system. Applications may range from very simple systems for 1-cylinder engines to more complex systems for high-performance or multi-cylinder engines.
Event
2014-11-18
Papers in this session are related to design, development and testing of new or innovative electronic controls or control systems for internal combustion engines. Topics may include hardware, software and algorithm/function innovations as well as the associated sensors or actuators employed in the control system. Applications may range from very simple systems for 1-cylinder engines to more complex systems for high-performance or multi-cylinder engines.
Technical Paper
2014-11-11
Ken Fosaaen
Global concerns over pollution have led to increasingly strict emissions legislation targeting small engines, which currently pollute at a much greater level than modern multi-cylinder automotive engines. Closed-loop control may be required to meet many future legislation requirements; however, such systems can be impractical due to high added component costs. A necessary component for closed-loop engine control is an oxygen sensor. Existing automotive oxygen sensors are too large, require too much power, and far too expensive to be suitable for the vast majority of the global small engine applications; therefore, some manufacturers have developed smaller and/or unheated versions based on their existing sensors to meet this emerging need. The ability to miniaturize resistive based sensors well below that of traditional Nernst (zirconia based) oxygen sensors affords the opportunity to meet future emissions standards with less of an impact on cost. The performance of a novel low-cost, low-power narrow-band oxygen sensor was compared with several automotive as well as newer oxygen sensors developed for the small engine market.
Technical Paper
2014-11-11
Ken Fosaaen
Global concerns over pollution have led to increasingly strict emissions legislation targeting small engines, which currently pollute at a much greater level than modern multi-cylinder automotive engines. Closed-loop control may be required to meet many future legislation requirements; however, such systems can be impractical due to high added component costs. A necessary component for closed-loop engine control is an oxygen sensor. Existing automotive oxygen sensors are too large, require too much power, and far too expensive to be suitable for the vast majority of the global small engine applications; therefore, some manufacturers have developed smaller and/or unheated versions based on their existing sensors to meet this emerging need. The ability to miniaturize resistive based sensors well below that of traditional Nernst (zirconia based) oxygen sensors affords the opportunity to meet future emissions standards with less of an impact on cost. In this study, a sub-miniature resistance-based narrowband oxygen sensor was developed and its response to various exhaust lambda values was characterized at various temperatures.
Technical Paper
2014-11-11
Ryutaro Shinohara
We have tentatively manufactured the prototype model of exhaust heat recovery heat exchanger and carried out the heat transfer and pressure drop performance tests on it. This prototype (P.T.) is characterized that the overall heat transfer coefficient is less affected by the change of the hot air mass flow rate than that of the mass-produced model (M.P.) and overall heat transfer coefficient of the prototype exceeds that of the mass-produced under the Rel range of 1500. We have found that the changes of overall heat transfer coefficient are caused by the variation of the thermal resistance of hot air side and the thermal resistance consists of the fin effective heat transfer coefficient and the tube hot air side heat transfer coefficient from equation of the thermal conductance. We have calculated the fin effective heat transfer coefficient using Pohlhausen equation and fin efficiency, and obtained the tube hot air side heat transfer coefficient from the test results. We have compared these coefficients and found that the fin effective heat transfer coefficient of the prototype is much lower, but the tube hot air side heat transfer coefficient of the prototype is much higher than that of the mass-produced.
Technical Paper
2014-11-11
Giuseppe Danilo Rossi, Sara Gronchi, Matteo Gasperini, Bernardo Celata, Raffaele Squarcini
Electrical oil pumps are used in order to reduce the engine car emissions thanks to the optimization of the absorbed energy and motor efficiency. The present trend to obtain this improvement of the motor efficiency is the electrification of the auxiliary components that can be driven independently from the engine shaft. In this field, the electrical oil pumps are one of the most required components used for automatic transmissions as well as for the main lubrication system. An electrical oil pump is driven by an electric motor with its electronic control system. The electric motor should generate an available torque higher than the total torque requested by the hydraulic mechanism, to allow the pump generating the expected performances. The pump type has been chosen thanks to PPT experience in the development of hydraulic pumps, the “G-rotor” solution, which is a particular shape of gears, is the best compromise in terms of noise, dimensions, robustness and packaging. In order to design an optimized electrical oil pump it is important to evaluate the absorbed torque by the hydraulic mechanism.
Technical Paper
2014-11-11
Tetsuya Osakabe
As gasoline prices have crept up in recent years, demand for higher fuel efficiency has increased also for motorcycles. Growing attention has been paid to how we can comprehensively improve fuel efficiency by raising the efficiency of the generator and other auxiliary equipment. This paper describes how we improved the power generation efficiency of a single-phase motorcycle generator of outer-rotor type by reducing electric losses (i.e. iron loss and copper loss) and improving magnetic flux through electromagnetic field analysis. Through electromagnetic field analysis, we first distinguished iron loss and copper loss. Then, focusing on the iron loss that we found inferiority, we modified the thickness and material of the stator core and improved power generation efficiency. Another source of iron loss was the non-magnetic protection cover of the magnets in the rotor. We reduced iron loss by drilling holes of that cover into where the magnet and the stator core faced each other and the magnetic flux passed through.
Technical Paper
2014-11-11
Lakshmy Neela, Klaus Grambichler
Automotive Magnetic Sensor market is expanding day by day serving a lot of automotive applications. Crankshaft sensors are mainly used to monitor the position or rotational speed of the crankshaft, thereby controlling the ignition system timing and enabling misfire detection. Passive VR (Variable Reluctance) sensor and Active Hall effect sensor are the two commonly used low cost sensors in automotive crankshaft applications. An extensive research regarding the functional and physical attributes of both sensor technologies (incorporating innovative designs and different application scenarios) has been performed providing a wide overview of the benefits and ill-effects of both the technologies and a comprehensive guide for customers in sensor selection. Cost is an important factor driving today’s automotive market. Comparison of overall costs of active and passive systems starting with the sensing element, additional circuitry for signal shaping till package and assembly process from system level has been studied in detail.
Technical Paper
2014-11-11
Ryosuke Ibata, Hirotaka Kawatsu, Tetsuya Kaneko, Kenji Nishida
Motorcycles with small displacement engines (hereafter called small motorcycles) are used in large numbers and the improvement of the fuel economy is one of the important issues to be solved from the global environmental viewpoint. Spark advance control is one of the technologies for fuel economy improvements. To apply this technology, it generally requires being equipped with a throttle position sensor to detect engine loads. However, many of these small motorcycles cannot be equipped with a throttle position sensor because of their stringent requirements for affordable prices. Meanwhile, the onboard technology for estimating engine loads has been developed by using “Δω” (delta-omega), which represents the amplitude of variations in crankshaft angular velocity within a four-stroke cycle. This study aimed at the achievement of the system that could substitute for a throttle position sensor, which outputs an on-off signal to distinguish the engine load levels into two ranges (hereafter called throttle switch), using engine load estimation technology based on Δω.
Technical Paper
2014-11-11
Koorosh Khanjani, Jiamei Deng, Andrzej Ordys
Controlling Variable Coolant Temperature in Internal Combustion Engines and Its Effects on Fuel Consumption Koorosh Khanjani ; Roehampton Vale Campus, Kingston University, Friars Avenue, London SW15 3DW; K1155703@kingston.ac.uk; Tel: +44 (0)208 417 4730; Jiamei Deng ; Roehampton Vale Campus, Kingston University, Friars Avenue, London SW15 3DW; J.Deng@kingston.ac.uk; Tel: +44 (0)208 417 4712; Andrzej Ordys ; Roehampton Vale Campus, Kingston University, Friars Avenue, London SW15 3DW; A.Ordys@kingston.ac.uk; +44 (0) 208 417 4846; Abstract: Increasing the efficiency and durability of internal combustion engines is one of the major concerns of engineers in development of modern road vehicles. Emission legislations are becoming stricter each year forcing manufacturers to deploy sophisticated engine control strategies to transfer more of the fuel chemical energy into power output. Internal combustion engines have now been equipped with electronic engine management control units which consist of precise measurements and performance by means of various sensors and actuators.
Technical Paper
2014-11-11
Klaus Stuhlmüller
In a microcontroller-operated ignition process, the combustion is dependent on three important criteria: Spark burn duration, ignition voltage, and ignition spark energy. These criteria must be adapted exactly to the engine's individual requirement profile to ensure optimal combustion. In each operating state and operating environment, optimum ignition is ensured by continuously analyzing sensor values. Engine manufacturers continue to be faced with the challenge of ensuring that the machine runs as smoothly and quietly as possible. Increased spark duration and higher energy of the ignition spark enable improved combustion of the gasoline-air mixture in the combustion compartment. This article describes an electrical ignition process using an array of multiple coils and a magnetic generator that is rotating in sync with the machine. During this process the magnetic field temporarily flows through the coils and generates a sequence of magnetic flow variations per rotation. This induces corresponding half-waves of alternating voltage in the coils of the ignition module.
Technical Paper
2014-11-11
Henning Heikes, Christian Steinbrecher, Bastian Reineke, Jürgen Berkemer, Thorsten Raatz, Wolfgang Fischer
Cost reduction of engine management systems (EMS) for two-wheeler applications is the key to utilize their potentials compared to carburetor bikes regarding emissions, fuel economy and system robustness. In order to reduce the costs of a system with port fuel injection (PFI) Bosch is developing an EMS without a manifold air pressure (MAP) sensor. The pressure sensor is usually used to compensate for different influences on the air mass, which cannot be detected via the throttle position sensor (TPS) and mean engine speed. Such influences are different leakage rates of the throttle body and changing ambient conditions like air pressure. Bosch has shown in the past that a virtual sensor relying on model based evaluation of engine speed can be used for a detection of leakage air mass in idling to improve the pre-control of the air-fuel ratio. This provides a functionality which so far was only possible with an intake pressure sensor. In this paper the air mass calculated from the model based engine speed evaluation is used to adapt the influence of ambient pressure changes e.g. because of different altitudes.
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