Engine system
AssigneeMazda Motor Corporation
InventorsTakeshi Nagasawa, Ryo Kiyosue
Life of this patent
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Abstract
An engine system is provided, which includes an engine configured to generate a motive force for a vehicle by combusting a mixture gas of fuel and intake air, a water injector configured to inject heated water into a combustion chamber of the engine, and a controller configured to control the water injector to inject the water into the combustion chamber during an expansion stroke of the engine. The controller acquires a demanded engine load of the engine, and controls the water injector to retard a start timing of the water injection when the demanded engine load is within a first-load range, compared to when the demanded engine load is within a second-load range where the engine load is lower than in the first-load range.
Claims20
An engine system, comprising:
- an engine configured to generate a motive force for a vehicle by combusting a mixture gas of fuel and intake air;
- a water injector configured to inject heated water into a combustion chamber of the engine;
- and
- a controller configured to control the water injector to inject the water into the combustion chamber during an expansion stroke of the engine,
- wherein the controller acquires a demanded engine load of the engine, and controls the water injector to retard a start timing of the water injection when the demanded engine load is within a first-load range, compared to when the demanded engine load is within a second-load range where the engine load is lower than in the first-load range.
An engine system, comprising:
- an engine configured to generate a motive force for a vehicle by combusting a mixture gas of fuel and intake air;
- a water injector configured to inject heated water into a combustion chamber of the engine;
- and
- a controller configured to control the water injector to inject the water into the combustion chamber during an expansion stroke of the engine,
- wherein the controller acquires a demanded engine load of the engine, and controls the water injector to retard a start timing of the water injection as the demanded engine load increases.
Dependencies are inferred from the claim text.