| US 7,536,994 B2 | ||
| Internal combustion engine and fuel injection method in internal combustion engine | ||
| Takuya Yamada, Saitama (Japan); Teruyoshi Morita, Saitama (Japan); Yoshikazu Ishitsuka, Saitama (Japan); Naoaki Takeda, Saitama (Japan); Atsushi Umemoto, Saitama (Japan); Ken Ogawa, Saitama (Japan); Noritaka Kimura, Saitama (Japan); and Takeo Kobayashi, Saitama (Japan) | ||
| Assigned to Honda Motor Co., Ltd., Tokyo (Japan) | ||
| Filed on Dec. 13, 2007, as Appl. No. 12/555. | ||
| Claims priority of application No. 2006-345294 (JP), filed on Dec. 22, 2006. | ||
| Prior Publication US 2008/0210198 A1, Sep. 04, 2008 | ||
| Int. Cl. F02B 7/00 (2006.01); F02B 7/08 (2006.01) | ||
| U.S. Cl. 123—431 [123/305] | 10 Claims |
| 1. An internal combustion engine comprising:
a first injector for injecting fuel into an intake port or a combustion chamber;
a second injector for injecting the fuel into the combustion chamber following the injection of the fuel by the first injector;
and
a spark plug for igniting an air-fuel mixture within the combustion chamber,
wherein an air-fuel ratio of the air-fuel mixture produced in the combustion chamber by the injection of the fuel by the first
injector is set in a range of 28 to 38,
wherein an amount of the fuel injected by the second injector is fixed at a given value, and an amount of the fuel injected
by the first injector is changed corresponding to a demanded operating load, and
wherein when the demanded operating load is changed, a ratio between an amount of gas residing in a cylinder and an amount
of gas newly drawn therein is controlled based on a closing timing of an exhaust value.
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