Engine auto-stop vehicle and control method therefor
AssigneeJATCO Ltd
InventorsNaohiro YAMADA, Keichi TATEWAKI, Shinichiro WATANABE, Noritaka AOYAMA
Life of this patent
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Abstract
A controller actuates an electrical oil pump when an idle stop condition or a coast stop condition holds and causes the actuation of the electrical oil pump to continue without being stopped until an accelerated state of a vehicle or a driver's intention to accelerate is determined even if the idle stop condition and the coast stop condition no longer holds thereafter.
Claims18
An engine auto-stop vehicle, comprising:
- an engine which automatically stops when a stop condition holds and restarts when a restart condition holds;
- a first oil pump which is driven by the engine;
- a second oil pump which operates during the automatic stop of the engine;
- an acceleration determining unit that performs one or more of acceleration condition determinations as to whether or not the vehicle is in an accelerating state, whether or not there is an acceleration request and whether or not an acceleration request is predicted;
- and
- an oil pump control unit that actuates the second oil pump when the stop condition holds and causes the actuation of the second oil pump to continue during a period until the determination is performed by the acceleration determining unit after the restart condition holds.
A control method for an engine auto-stop vehicle including an engine which automatically stops when a stop condition holds and restarts when a restart condition holds, a first oil pump which is driven by the engine and a second oil pump which operates during the automatic stop of the engine, comprising:
- a determining step of performing one or more of acceleration condition determinations as to whether or not the vehicle is in an accelerating state, whether or not there is an acceleration request and whether or not an acceleration request is predicted;
- and
- a continuing step of actuating the second oil pump when the stop condition holds and causing the actuation of the second oil pump to continue during a period until the determination is performed in the determining step after the restart condition holds.
An engine auto-stop vehicle, comprising:
- an engine which automatically stops when a stop condition holds and restarts when a restart condition holds;
- a first oil pump which is driven by the engine;
- a second oil pump which operates during the automatic stop of the engine;
- acceleration determining means for performing one or more of acceleration condition determinations as to whether or not the vehicle is in an accelerating state, whether or not there is an acceleration request and whether or not an acceleration request is predicted;
- and
- oil pump control means for actuating the second oil pump when the stop condition holds and causing the actuation of the second oil pump to continue during a period until the determination is performed by the acceleration determining unit after the restart condition holds.
Dependencies are inferred from the claim text.