Method for controlling a fuel injector of a diesel engine
AssigneeRobert Bosch GmbH
InventorsStefan Polach, Dara Torkzadeh
Life of this patent
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Abstract
A method for controlling a fuel injector of a diesel engine having a predefined control time from a control start, in which a setpoint value of a combustion start of a combustion chamber charge of the diesel engine is ascertained. The method is characterized in that an ignition delay between the control start and the combustion start is estimated from performance parameters of the diesel engine using a computing model, and the control start is formed on the basis of the setpoint value of the combustion start and the estimated ignition delay. A control unit controls the sequence of the method.
Claims18
A method for controlling a fuel injector of a diesel engine having a predefined control time from a control start, the method comprising:
- determining a setpoint value for a combustion start of a combustion chamber charge of the diesel engine as a function of at least one of a rotational speed and a torque request defined by a driver intent, and an operating mode;
- estimating an ignition delay between the control start and the combustion start from performance parameters of the diesel engine using a computing model;
- and
- forming the control start based on the setpoint value of the combustion start and the estimated ignition delay.
A control unit to control a fuel injector of a diesel engine having a predefined control time from a control start, comprising:
- a determining arrangement to determine a setpoint value of a combustion start of a combustion chamber charge of the diesel engine as a function of at least one of a rotational speed and a torque request define by a driver intent, and an operating mode;
- and
- another determining arrangement to estimate an ignition delay between the control start and the combustion start from performance parameters of the diesel engine, and to form the control start from the setpoint value of the combustion start and the estimated ignition delay.
Dependencies are inferred from the claim text.