Gasoline engine
AssigneeHitachi, Ltd.
InventorsJunichi YAMAGUCHI, Shinya MATOHARA, Masahiko Inoue
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Abstract
A gasoline engine is provided that effectively uses two injectors to enhance homogeneity of mixture at the time of high-load for improving output power and to enable stable operation also when stratified or weak stratified combustion is performed. One cylinder is provided with a first injector 122a and a second injector 122b, which directly inject fuel into the cylinder. An ECU 201 uses one or both the injectors to perform fuel injection during one combustion cycle depending on operating conditions.
Claims14
A gasoline engine for injecting fuel directly to cylinders by injectors,
- wherein two injectors are provided for each cylinder, and
- one or both the injectors are used for fuel injection within one combustion cycle depending on an operating condition.
A gasoline engine for injecting fuel directly to cylinders by injectors,
- wherein two injectors are provided for each cylinder, and
- the two injectors are used to form a weak stratified mixture in the entire cylinder during cold-engine operation immediately after start-up, and a mixture richer than an average air-fuel ratio of the entire cylinder around an ignition plug.
Dependencies are inferred from the claim text.