Waste Heat Management For Improved Passenger Compartment Heating

Tao, David; Malec, Ronald C.; Adams, Tim G.

doi:10.4271/885029

Cited by 5 publications

(2 citation statements)

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“…Other examples of exhaust heat recovery systems and their benefits can be seen elsewhere. [172][173][174][175][176][177][178][179][180][181][182][183][184] Engine and powertrain TMSs typically consist of a combination of devices such as heat exchangers, flow control devices, electric fans and pumps, etc., which are used for temperature conditioning. Instances of use of these devices are discussed in the following sections.…”

Section: Engine Waste Heat Recoverymentioning

confidence: 99%

A review of energy consumption, management, and recovery in automotive systems, with considerations of future trends

Chiara

Canova

2013

Proceedings of the Institution of Mechanical Engineers, Part D:

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In response to the current and future energy and environment challenges, the automotive industry is strongly focusing on improving the fuel efficiency of vehicles. Although the electrification of automotive powertrains is clearly the principal path towards sustainable transportation, many opportunities still exist to improve the fuel economy of conventional vehicles. However, some of the technical solutions representing the state of the art in research and advanced development are difficult to benchmark in terms of their potential benefits for fuel consumption improvement. A greater understanding of the fuel energy utilization on the vehicle (here intended as a ‘system’ ) is therefore necessary in order to identify the readily available opportunities for efficiency improvements and, ultimately, to develop automobiles which are more fuel efficient. To this extent, this paper presents a review of the state of the art and technology trends in the field of energy management and recovery for automotive systems, with the primary focus on conventional powertrains. An understanding of the fuel energy utilization and dissipation associated with the vehicle subsystems (the engine, transmission, and chassis) is provided, as well as an overview of the opportunities and potential challenges in improving the fuel economy through system-level energy management, recovery, and harvesting. Finally, an overview of the most important solutions for managing energy dissipation, energy recovery, and harvesting is presented, discussing their potential for fuel economy improvement, technical readiness, and challenges. Wherever possible, projections on fuel economy improvements, based on either experimental data or simulations, are reported to provide opportunity for the assessment and comparison of current and future technologies.

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Section: Engine Waste Heat Recoverymentioning

confidence: 99%

A review of energy consumption, management, and recovery in automotive systems, with considerations of future trends

Chiara

Canova

2013

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…In particular,about 30% of thermal energy is wasted through the exhaust system in the form of the exhaust gas.The wasted heat is favorable due to the high energy level.In order to improve the fuel efficiency of the vehicle, it is necessary not only to optimize the efficiency of the powertrain itself, but also to adapt the EHRS(Exhaust gas Heat Recovery System) technology to utilize the waste heat discharged to exhaust system. [1][2] Two approaches are possible: direct use of the heat exchanger or indirect use of the exhaust heat with the heat storage. During the cold start of the vehicle, friction loss increases to the high viscosity at low temperatures such as engine oil and ATF (Automatic Transmission Fluid).…”

Section: Introductionmentioning

confidence: 99%

Effects of the exhaust gas heat recovery system with a plate heat exchanger on the warm-up performance characteristics of the gasoline engine

JungKim¹,

Wook-Han²,

Kim³

et al. 2018

IJET

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Background/Objectives: To meet the regulations for the fuel economy, an EHRS (Exhaust gas Heat Recovery System, which was installed within the vehicle exhaust system and recovered the heat from the exhaust gas, were needed. The EHRS enabled the engine to achieve the fast warm-up performance for reducing friction loss during the cold start.The objective of this paper was to investigate the effects of the design parameters of the EHRS with a plate heat exchanger on the warm-up performance of a gasoline engine.Methods/Statistical analysis: The EHRS with the plate heat exchanger was manufactured and installed behind the catalyst in the exhaust system of the gasoline direct injection engine. The experimental study and multi-disciplinary analysis were carried out to investigate the effects of the EHRS on the warm-up performance of the engine, such as the coolant temperature, the exhaust gas temperature and the recovery heat at idle condition and the step-load condition.Findings: Because the recovery of heat was about 1. 7 kW at idle condition, the effect of the EHRS on the warm-up performance was negligible. However, due to 17.2 kW of the recovery of heat at the stepload condition of T=140 Nm at N=2,400 rpm, the EHRS enabled to shorten the warm-up time by 548 s comparison that of the base engine.Improvements/Applications: The fuel economy will be expected to be improved through an EHRS, which provides the improved combustion in the warm-up phase and a decrease in friction loss.

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