US 9,790,911 B2Granted

Engine control device

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsKenichi Ishii, Hiroto Miura, Hideki Ohashi, Yosuke Yamashita, Masataka Okuda

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Abstract

An engine control device applied to a vehicle equipped with an actuator for changing a suspension property of the vehicle, a suspension control device for driving the actuator, and an engine. The engine control device automatically stops the engine operation when a stop condition is satisfied and automatically starts the engine operation when a start condition is satisfied, continues the engine operation when a signal for inhibiting the automatic stop of the engine operation is sent to the engine control device in order to drive the actuator and the engine control device judges that no malfunction occurs in the suspension control device even if the stop condition is satisfied, and ignores the signal and automatically stops the engine operation when the stop condition is satisfied and judges that the malfunction occurs in the suspension control device even if the signal is sent to the engine control device.

Claims6

Dependent claims

An engine control device applied to a vehicle equipped with:

an electric actuator for changing a suspension property of said vehicle;
a suspension control device for driving said actuator;
and
an internal combustion engine,
the engine control device comprising an engine control part programmed to:
automatically stop the operation of said engine when a predetermined engine operation stop condition is satisfied;
and
automatically start the operation of said engine when a predetermined engine operation start condition is satisfied,
wherein said engine control part is programmed to:
judge if a malfunction occurs in said suspension control device;
continue the operation of said engine when a stop inhibition requesting signal for inhibiting the automatic stop of the operation of said engine is sent to the engine control device in order to drive said actuator and said engine control part judges that no malfunction occurs in said suspension control device even if said engine operation stop condition is satisfied;
and
ignore said stop inhibition requesting signal and automatically stop the operation of said engine when said engine operation stop condition is satisfied and said engine control part judges that the malfunction occurs in said suspension control device even if said stop inhibition requesting signal is sent to the engine control device.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/735,645Filed 10 Jun 2015
Priority: JP 2014-12096711 Jun 2014
Published: US 2015/0361940 A117 Dec 2015
Granted: 17 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

F02N 11/084
Vehicle conditions: state of vehicle accessories, e.g. air condition or power steering
B60G 17/0195
The regulating means comprising electric or electronic elements: characterised by the regulation being combined with other vehicle control systems
B60W 10/06
Including control of propulsion units: including control of combustion engines
B60W 10/22
Conjoint control of vehicle sub-units of different type or different function: including control of suspension systems