Engine control device
AssigneeSubaru Corporation
InventorsMakoto ITO, Ryotaro YAMAGUCHI
Life of this patent
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Abstract
An engine control device controls an engine including a turbo-supercharger, a waste gate valve, an air-bypass valve, and a high-pressure fuel system. The engine control device includes: an air-bypass valve control unit and an abnormality detection unit. The air-bypass valve control unit controls the air-bypass valve. The abnormality detection unit detects an abnormality in the high-pressure fuel system. The air-bypass valve control unit increases an opening degree of the air-bypass valve in accordance with detection of the abnormality by the abnormality detection unit.
Claims4
An engine control device configured to control an engine,
- the engine comprising
- a turbo-supercharger that has a turbine to be driven by exhaust gas and a compressor to be driven by the turbine,
- a waste gate valve provided in a waste gate passage that allows the exhaust gas to bypass the turbine,
- an air-bypass valve provided in an air-bypass passage that allows fresh air to bypass the compressor, and
- a high-pressure fuel system that has a high-pressure fuel pump configured to boost a pressure of fuel supplied from a feed pump and an injector configured to inject the fuel discharged by the high-pressure fuel pump,
- the engine control device comprising:
- an air-bypass valve control unit configured to control the air-bypass valve;
- and
- an abnormality detection unit configured to detect an abnormality in the high-pressure fuel system,
- wherein the air-bypass valve control unit is configured to increase an opening degree of the air-bypass valve in accordance with detection of the abnormality by the abnormality detection unit.
An engine control device configured to control an engine,
- the engine comprising
- a turbo-supercharger that has a turbine to be driven by exhaust gas and a compressor to be driven by the turbine,
- a waste gate valve provided in a waste gate passage that allows the exhaust gas to bypass the turbine,
- an air-bypass valve provided in an air-bypass passage that allows fresh air to bypass the compressor, and
- a high-pressure fuel system that has a high-pressure fuel pump configured to boost a pressure of fuel supplied from a feed pump and an injector configured to inject
- the fuel discharged by the high-pressure fuel pump, the engine control device comprising circuitry configured to
- control the air-bypass valve, and
- detect an abnormality in the high-pressure fuel system,
- wherein the circuitry is configured to increase an opening degree of the air-bypass valve in accordance with detection of the abnormality.
Dependencies are inferred from the claim text.