Process for starting an internal-combustion engine and an internal-combustion engine having a starting-aid device
AssigneeKNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
InventorsStephan Rebhan, Manuel Marx, Guang Rao
Life of this patent
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Abstract
A process is provided for starting an internal-combustion engine, particularly a Diesel engine, having an exhaust gas turbocharger and an inlet gas supply device with at least one compressed-air reservoir which is connected with an intake pipe of the internal-combustion engine. During the starting of the internal-combustion engine, additional air is blown from the inlet gas supply device into the intake pipe until a rotational speed of the internal-combustion engine reaches a previously definable idling speed.
Claims20
A process for starting an internal-combustion engine having an exhaust gas turbocharger and an inlet gas supply device with at least one compressed-air reservoir coupled with an intake pipe of the internal-combustion engine, the process comprising the acts of:
- during a starting of the internal-combustion engine, blowing additional air from the inlet gas supply device into the intake pipe;
- and
- wherein the blowing of the additional air from the inlet gas supply device into the intake pipe during the starting of the internal-combustion engine occurs at least until a rotational speed of the internal-combustion engine reaches a previously defined idling speed.
A process for starting an internal-combustion engine having an exhaust gas turbocharger, an inlet gas supply device with at least one compressed-air reservoir coupled with an intake pipe of the internal-combustion engine, and a variable valve gear, the process comprising the acts of:
- during a starting of the internal-combustion engine, blowing additional air from the inlet gas supply device into the intake pipe;
- driving the internal-combustion engine via an electric starter in a first starting device operation until the internal-combustion engine reaches a previously defined intermediate speed;
- driving the internal-combustion engine in a second starting device operation in which the additional air is blown-in from the inlet gas supply device and the rotational speed of the internal-combustion engine is increased until the rotational speed reaches the previously defined idling speed;
- and
- igniting a fed ignitable fuel-air mixture when the previously defined idling speed is reached, wherein
- the blowing of the additional air from the inlet gas supply device into the intake pipe during the starting of the internal-combustion engine occurs at least until a rotational speed of the internal-combustion engine reaches a previously defined idling speed.
An internal-combustion engine, comprising:
- an exhaust gas turbocharger having an inlet gas supply device in an intake pipe of the internal-combustion engine;
- a compressed air system having at least one compressed-air reservoir connectable with the inlet gas supply device;
- an engine timing gear;
- and
- a starting-aid device having a control device;
- wherein
- the starting-aid device is operatively configured for controlling the inlet gas supply device for blowing-in additional air when starting the internal-combustion engine in order to affect a starting process of the internal-combustion engine, and
- the blowing-in of the additional air from the inlet gas supply device begins at a point in time that is either before, or at a time at which the internal-combustion engine reaches its starting speed, and continues at least until a rotational speed of the internal combustion engine reaches a previously defined idling speed such that the internal-combustion engine does not experience a drop in rotational speed during the starting process thereof.
Dependencies are inferred from the claim text.