VEHICLE TRAVEL CONTROL DEVICE

WIPO Patent Application WO/2014/068716

A1

Provided is a vehicle travel control device that improves both the fuel economy effect of coasting and the re-acceleration response when switching back from coasting to normal travel. The fuel pressure (Pcom) of an engine (12) is higher when coasting in neutral than when coasting with cylinders stopped. Fuel can thus be injected at a high fuel pressure (Pcom) when switching back from coasting in neutral to normal travel, making it possible to increase the engine speed (Ne) quickly. As such, a clutch (C1) that connects and disconnects a power-transmission pathway between the engine (12) and wheels (20) can be synchronized and engaged quickly, resulting in good re-acceleration response. Also, since the fuel pressure (Pcom) of the engine (12) is lower when coasting with the cylinders stopped than when coasting in neutral, a fuel pump (26) has to do less work when coasting with the cylinders stopped, thus extending the coasting distance and making it possible to increase the fuel economy effect of coasting.

KUROKI RENTARO (JP)
HIRAI TAKUYA (JP)
MITSUYASU MASAKI (JP)
KIM JONGGAP (JP)
MATSUNAGA MASAKI (JP)
KIDO YASUNARI (JP)
SUZUKI TAKEAKI (JP)
KOGURE TAKAYUKI (JP)
OKAMURA YUKARI (JP)
SATO AKIHIRO (JP)
KINOSHITA YUSUKE (JP)

PCT/JP2012/078224

May 08, 2014

October 31, 2012

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TOYOTA MOTOR CO LTD (JP)
KUROKI RENTARO (JP)
HIRAI TAKUYA (JP)
MITSUYASU MASAKI (JP)
KIM JONGGAP (JP)
MATSUNAGA MASAKI (JP)
KIDO YASUNARI (JP)
SUZUKI TAKEAKI (JP)
KOGURE TAKAYUKI (JP)
OKAMURA YUKARI (JP)
SATO AKIHIRO (JP)
KINOSHITA YUSUKE (JP)

F02D41/38; F02D29/00

JPH0579364A	1993-03-30
JP2011183963A	2011-09-22
JP2010203387A	2010-09-16
JP2005299512A	2005-10-27
JP2012219904A	2012-11-12

IKEDA Haruyuki et al. (JP)
Haruyuki Ikeda (JP)

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