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Technical Paper

An Extensive Optimization Methodology to Validate the Exhaust After-Treatment System of a BS VI Compliant Modern Diesel Engine

The Indian automotive industry has migrated from BS IV (Bharat stage IV) to BS VI (Bharat Stage VI) emission norms from 1st April 2020. This two-step migration of the emission regulations from BS IV to BS VI demands significant engineering efforts to design and integrate highly complex exhaust after-treatment system (EATS). In the present work, the methodology used to evaluate the EATS of a high power-density 1.5-liter diesel engine is discussed in detail. The EATS assembly of the engine consists of a diesel oxidation catalyst (DOC), a diesel particulate filter with selective catalytic reduction coating (sDPF), urea dosing module and urea mixer. Typically, all these components that are needed for emission control are integrated into a single canning of shell thickness ~1.5mm. Moreover, the complete EATS is directly mounted onto the engine with suitable mounting brackets on the cylinder block and cylinder head.
Technical Paper

Numerical Investigation on Various Layouts of Phase Change Materials Based Battery Module Used in Electric Vehicles

The future of automobile industry is moving towards the electrification of vehicles due to the increase in pollution and Global-Warming. In this contest a suitable Battery Thermal Management system (BTMS) needs to be incorporated for efficient operation of batteries. The battery performance is greatly affected by operating temperature, and the successful control of its temperature improves performance which ensures the safe operation and extends lifespan. In the recent years many researches are going on to adopt phase change materials for BTMS. Since the Phase Change material is of the passive cooling system, it does not require any additional power source for its operation. The Current study is an attempt towards the optimization of the battery using PCM by varying the shape and cell spacing for paraffin based PCM Material. In the present work Computational analysis is carried out to analyse the thermal performance of various shapes of battery module.
Technical Paper

CFD Analysis on Waste Heat Recovery Unit for Boiler Plant

A waste heat recovery unit (WHRU) is an energy recovery heat exchanger that recovers heat from hot streams with high energy contents. In this study, the modification of the design of the waste heat recovery unit which receives flue gases from the boiler in order extract the heat from flue gases and enhance the heat transfer rate. Generally, the body of the waste heat recovery unit of the boiler is made up of Aluminium which receives exhaust gases from the boiler plant through two inlets of different sizes which connected to exhaust outlets of the plant. This unit assists to extract the heat from the flue gases with help of rubber jacket wrapped around it which has inlet and outlet for circulation of water in order to extract the heat from the flue gases. Due to wear and tear of the rubber jacket which leads leakage of the water and steam, leads to poor exchange of heat and hence needs frequent replacement instead of service.
Technical Paper

Simulation Study on the Use of Argon Mixtures in the Pressurized Motored Engine for Friction Determination

Mechanical friction and heat transfer in internal combustion engines are two highly researched topics, due to their importance on the mechanical and thermal efficiencies of the engine. Despite the research efforts that were done throughout the years on both these subjects, engine modeling is still somewhat limited by the use of sub-models which do not fully represent the phenomena happening in the engine. Developing new models require experimental data which is accurate, repeatable and which covers wide range of operation. In SAE 2018-01-0121, the conventional pressurized motored method was investigated and compared with other friction determination methods. The pressurized motored method proved to offer a good intermediate between the conventional motored tests, which offer good repeatability, and the fired tests which provide the real operating conditions, but lacks repeatability and accuracy.

Waste heat recovery issues, challenges to be discussed at SAE symposium

The challenges of climate change and energy security require a continuous effort toward reduction of global environmental pollution and fossil oil consumption. To meet greenhouse gas (GHG) emission targets and to decrease oil dependency, overall energy consumption of vehicles must be substantially reduced.

FAA, SAE International focus on engine fire protection system standards for aerospace

Aerospace systems, subsystems, and components must continue to operate as intended when exposed to fire, rather than going up in flames and ceasing to work altogether. Fire and flammability testing is an all-important prerequisite to airworthiness, and the focus of a new technical standards committee that SAE International in Warrendale, Pennsylvania, is forming in response to a request from Federal Aviation Administration (FAA) officials in Washington.

SAE International issues, revises aerospace engineering technical reports

Standards development teams at SAE International in Warrendale, Pa., have issued 11 new technical documents and revised or reaffirmed another 54 technical reports focused on mobility engineering across the aerospace, automotive, and commercial transportation communities. The new documents, issued throughout June 2018, cover a variety of technical subject areas, including: diagnostic link connector security, mitigation strategies against illumination effects, data dictionary for quantities used in cyber physical exams, requirements for production of metal powder feedstock for use in additive manufacturing of aerospace parts, and laser powder bed fusion process.