Honda Motor Co., Ltd.

Hajime Kabashima

Yuichi Shimasaki

Yasuhiro Urata

Kazushi Yamamoto

A control device for an internal combustion engine employing PCCI combustion, capable of realizing high-stability operation of the engine throughout a large operation area, is provided. The engine control device comprises a fuel supply system which supplies light oil or mixed fuel containing light oil to the engine, a gas supply system which supplies hydrogen to the engine, and a required premixed gas calculating unit which previously stores and uses multiple combustion waveforms (changing depending on hydrogen addition concentration) as data. The required premixed gas calculating unit selects one of the combustion waveforms so as to achieve high thermal efficiency depending on the status of the engine and determines the hydrogen addition concentration (addition concentration of the hydrogen to be supplied to the engine) corresponding to the selected combustion waveform, by which the generation of PM and NOx can be reduced while also improving the thermal efficiency of the engine.

Control device for internal combustion engine

A control device for a premixed charge compression ignition (PCCI) internal combustion engine is provided, capable of stable operation over a wide operating range. The control device of an enginecomprises: a fuel supply meansof supplying the main fuel to the engine; an hydrogen supply meansof supplying reformed gas containing hydrogen; a fuel supply control unitof controlling an injection timing and an injection period of the main fuel supplied from the injectorof the fuel supply meansbased on the PCCI combustion condition of the engine; and a hydrogen supply control unitof controlling an injection timing and an injection period of reformed gas from the gas injectorof the hydrogen supply meansbased on the PCCI combustion condition.

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Saitama, Japan

Hajime Kabashima