Control device for internal combustion engine and control method for internal combustion engine
AssigneeYanmar Power Technology Co., Ltd.
InventorsGo Asai, Hideyuki Ogawa, Gen Shibata, Kenji Yamazaki
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Abstract
A control device to be applied to an internal combustion engine having a fuel reformation cylinder and an output cylinder, wherein the compression end gas temperature of the fuel reformation cylinder is adjusted by changing an EGR gas amount, an effective compression ratio, or a polytropic number according to an equivalence ratio in the fuel reformation cylinder so as to achieve a target concentration of a specific gas component in reformed fuel generated in the fuel reformation cylinder. The target concentration is defined according to a required engine power.
Claims20
A control device for an internal combustion engine including a fuel reformation cylinder and an output cylinder to which reformed fuel generated in the fuel reforming cylinder is supplied, the output cylinder being configured to yield an engine power by combusting the reformed fuel, the control device comprising:
- a gas temperature adjustment unit configured to adjust a gas temperature of a gas prior to the gas being provided to the fuel reformation cylinder at a time of fuel reformation according to an equivalence ratio in the fuel reformation cylinder, a concentration of a specific gas component in the reformed fuel generated in the fuel reformation cylinder adjusted towards a target concentration defined according to a required engine power, the gas temperature adjusted based on the target concentration.
A control method for an internal combustion engine including a fuel reformation cylinder and an output cylinder to which reformed fuel generated in the fuel reforming cylinder is supplied, the output cylinder being configured to yield an engine power by combusting the reformed fuel, the control method comprising:
- adjusting a gas temperature of a gas prior to the gas being provided to the fuel reformation cylinder based on an equivalence ratio in the fuel reformation cylinder, a concentration of a specific gas component in the reformed fuel generated in the fuel reformation cylinder adjusted towards a target concentration defined according to a required engine power, the gas temperature adjusted based on the target concentration.
An apparatus comprising:
- a control device configured to initiate, based on a determination that a compression end gas temperature of a fuel reformation cylinder corresponding to a gas component concentration of the fuel reformation cylinder does not equal a target compression end gas temperature of the fuel reformation cylinder corresponding to a target concentration, a gas temperature adjustment process configured to adjust a temperature of a gas prior to the gas being provide to the fuel reformation cylinder such that the gas component concentration is adjusted towards the target concentration.
Dependencies are inferred from the claim text.