Engine system including electronic fuel injection control apparatus
AssigneeHonda Motor Co., Ltd.
InventorsYoichi Yamamura, Ryuichi Kimata, Toshikazu Nakamura
Life of this patent
Estimating the term…
Abstract
A fuel injection control apparatus is provided. An injection unit injects fuel in an internal combustion engine. A carbon monoxide concentration sensor is provided in an exhaust path of the internal combustion engine and detects a carbon monoxide concentration in an exhaust gas. A control unit controls the injection unit based on the carbon monoxide concentration detected by the carbon monoxide concentration sensor such that an air fuel ratio in the internal combustion engine becomes close to a target air fuel ratio.
Claims7
A fuel injection control apparatus comprising:
- an injection unit configured to inject fuel in an internal combustion engine;
- a carbon monoxide concentration sensor provided in an exhaust path of the internal combustion engine and configured to detect a carbon monoxide concentration in an exhaust gas;
- and
- a control unit configured to control the injection unit based on the carbon monoxide concentration detected by the carbon monoxide concentration sensor such that an air fuel ratio in the internal combustion engine becomes close to a target air fuel ratio.
A fuel injection control apparatus comprising:
- an injection unit configured to inject fuel in an internal combustion engine;
- an adjustment unit configured to adjust an inflow amount of air in an intake path of the internal combustion engine;
- an oxygen concentration sensor provided in an exhaust path of the internal combustion engine and configured to detect an oxygen concentration in an exhaust gas;
- a carbon monoxide concentration sensor provided in the exhaust path and configured to detect a carbon monoxide concentration in the exhaust gas;
- a discrimination unit configured to discriminate, based on the oxygen concentration detected by the oxygen concentration sensor, between a rich state in which an air fuel ratio is lower than a theoretical air fuel ratio and a lean state in which the air fuel ratio is higher than the theoretical air fuel ratio;
- a conversion unit configured to convert the carbon monoxide concentration detected by the carbon monoxide concentration sensor into the air fuel ratio;
- and
- a control unit configured to control the injection unit such that the air fuel ratio acquired by the conversion unit becomes close to a target air fuel ratio in the rich state and control the adjustment unit in accordance with a load of the internal combustion engine.
An engine system comprising:
- a fuel tank configured to store fuel;
- an internal combustion engine;
- a throttle configured to adjust an inflow amount of air in an intake path of the internal combustion engine;
- a carbon monoxide concentration sensor provided in an exhaust path of the internal combustion engine and configured to detect a carbon monoxide concentration in an exhaust gas;
- a generator driven by the internal combustion engine and configured to generate power;
- an injector operated by the power generated by the generator and configured to supply the fuel to the internal combustion engine;
- a fuel pump operated by the power generated by the generator and configured to supply the fuel stored in the fuel tank to the injector;
- an ignition device configured to ignite the fuel compressed in the internal combustion engine;
- and
- a control unit operated by the power generated by the generator and configured to control the fuel pump and the injector based on the carbon monoxide concentration detected by the carbon monoxide concentration sensor such that an air fuel ratio in the internal combustion engine becomes close to a target air fuel ratio.
Dependencies are inferred from the claim text.