Coupling of a KERS power train and a downsized 1.2TDI diesel or a 1.6TDI-JI h2 engine for improved fuel economies in a compact car

Parker, A 2010, 'Coupling of a KERS power train and a downsized 1.2TDI diesel or a 1.6TDI-JI h2 engine for improved fuel economies in a compact car', in SAE 2010 Power trains, Fuels and Lubricants Meeting, San Diego, USA, 25-27 October 2010, pp. 1-11.


Document type: Conference Paper
Collection: Conference Papers

Title Coupling of a KERS power train and a downsized 1.2TDI diesel or a 1.6TDI-JI h2 engine for improved fuel economies in a compact car
Author(s) Parker, A
Year 2010
Conference name SAE 2010 Power trains, Fuels and Lubricants Meeting
Conference location San Diego, USA
Conference dates 25-27 October 2010
Proceedings title SAE 2010 Power trains, Fuels and Lubricants Meeting
Publisher SAE International
Place of publication USA
Start page 1
End page 11
Total pages 11
Abstract Recovery of braking energy during driving cycles is the most effective option to improve fuel economy and reduce green house gas (GHG) emissions. Hybrid electric vehicles suffer the disadvantages of the four efficiency reducing transformations in each regenerative braking cycle. Flywheel kinetic energy recovery systems (KERS) may boost this efficiency up to almost double values of about 70% avoiding all four of the efficiency reducing transformations from one form of energy to another and keeping the vehicle's energy in the same form as when the vehicle starts braking when the vehicle is back up to speed. With reference to the baseline configuration with a 1.6 liters engine and no recovery of kinetic energy, introduction of KERS reduces the fuel usage to 3.16 liters per 100 km, corresponding to 82.4 g of CO 2 per km. The 1.6 liters Turbo Direct Injection (TDI) Diesel engine without KERS uses 1.37 MJ per km of fuel energy, reducing with KERS to 1.13 MJ per km. Downsizing the engine to 1.2 liters as permitted by the torque assistance by KERS, the fuel consumption is further reduced to 3.04 liters per 100 km, corresponding to 79.2 g of CO 2 per km and 1.09 MJ per km of fuel energy. These CO 2 and fuel usage values are 11% and 13% better than those of today's highest fuel economy hybrid electric vehicle. The car equipped with a 1.6 liter Turbo Direct Injection Jet Ignition (TDI-JI) H 2 ICE engine finally consumes 8.3 g per km of fuel, corresponding to only 0.99 MJ per km of fuel energy.
Subjects Automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
Keyword(s) KERS power train
1.2TDI diesel
1.6TDI-JI H2 engine
compact car
DOI - identifier 10.4271/2010-01-2228
Copyright notice © 2010 SAE International
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