Torque controller for internal combustion engine
AssigneeNissan Motor Co., Ltd.
InventorsIsamu Kazama, Hiroshi Iwano, Masayuki Yasuoka
Life of this patent
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Abstract
A torque controller for a direct-injection type internal combustion engine achieves the target engine torque accurately, without being affected by the combustion mode. The combustion efficiency is different depending on whether an engine combustion mode is in a homogeneous combustion mode or a stratified combustion mode. The torque controller calculates an eventual target intake air flow rate TTP2 based on the target intake air flow rate TTPO, the target air/fuel ratio tDML, and the combustion efficiency correction rate ITAF, which is calculated based on the combustion mode.
Claims12
A method for controlling an intake air quantity of an internal combustion engine, comprising:
- detecting an engine operating condition including whether an engine combustion mode is in a homogeneous combustion mode or a stratified combustion mode;
- calculating a target intake air quantity and a target ratio of air and fuel based on the engine operating condition;
- and
- correcting the target intake air quantity based on the engine combustion mode and the target ratio of air and fuel.
A torque controller which controls an intake air quantity of an internal combustion engine, comprising:
- a detector to detect an engine operating condition including whether an engine combustion mode is in a homogeneous combustion mode or a stratified combustion mode;
- a target intake air quantity calculation section to calculate a target intake air quantity based on the engine operating condition;
- a target ratio of air and fuel calculation section to calculate a target ratio of air and fuel based on the engine operating condition;
- and
- a correction section to correct the target intake air quantity based on the engine combustion mode and the target ratio of air and fuel.
A torque controller which controls an intake air quantity of an internal combustion engine, comprising:
- a detector to detect an engine operating condition including whether an engine combustion mode is in a homogeneous combustion mode or a stratified combustion mode;
- a target intake air quantity calculation section to calculate a target intake air quantity based on the engine operating condition;
- a target ratio of air and fuel calculation section to calculate a target ratio of air and fuel based on the engine operating condition;
- a combustion efficiency correction rate calculation section to calculate a combustion efficiency correction rate based on the engine combustion mode and the target ratio of air and fuel;
- and
- a correction section to correct the target intake air quantity based on the combustion efficiency correction rate and the target ratio of air and fuel.
A torque controller which controls an intake air quantity of an internal combustion engine, comprising:
- detect means for detecting an engine operating condition including whether an engine combustion mode is in a homogeneous combustion mode or a stratified combustion mode;
- target intake air quantity calculation means for calculating a target intake air quantity based on the engine operating condition;
- target ratio of air and fuel calculation means for calculating a target ratio of air and fuel based on the engine operating condition;
- and
- correction means for correcting the target intake air quantity based on the engine combustion mode and the target ratio of air and fuel.
Dependencies are inferred from the claim text.