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1. (WO2017017754) POWER TRAIN SYSTEM

Pub. No.:    WO/2017/017754    International Application No.:    PCT/JP2015/071214
Publication Date: Fri Feb 03 00:59:59 CET 2017 International Filing Date: Tue Jul 28 01:59:59 CEST 2015
IPC: F02M 33/00
Applicants: HITACHI, LTD.
株式会社日立製作所
Inventors: SUKEGAWA Yoshihiro
助川 義寛
KANEEDA Masato
金枝 雅人
HATAMIYA Shigeo
幡宮 重雄
Title: POWER TRAIN SYSTEM
Abstract:
Provided is a new power train system capable of achieving an increase in fuel economy, a reduction in the amount of harmful components in exhaust gas, an increase in power output, and the like, by adjusting the composition of exhaust gas components to suit driving conditions. To this end, the power train system is provided with: gas component separation means (2) for extracting a plurality of gas components, each having a different specific heat ratio, from exhaust gas from a spark ignition type internal combustion engine (1); flow-back means for causing the plurality of gas components to flow back into a combustion chamber of the internal combustion engine; and ratio adjustment means (3) for adjusting the ratios of the plurality of gas components to be refluxed into the combustion chamber, in accordance with the driving state of the internal combustion engine. The composition of gas to be recirculated into the internal combustion engine can be adjusted depending on various driving conditions. Thus, an increase in fuel economy, a reduction in the amount of harmful components in the exhaust gas, an increase in power output, and the like, can be achieved across a wide range of driving conditions of the internal combustion engine.