Method for shutting off the cylinders on an internal combustion engine, especially of a vehicle, and corresponding device
AssigneeRobert Bosch GmbH
InventorsSteffen Franke, Axel Heinstein
Life of this patent
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Abstract
The method and the device are used for cylinder shut-off in an internal combustion engine (10), in particular of a vehicle, using a control unit (15) in effective operational contact with the cylinders (11, 12, 13, 14) of the internal combustion engine (10), which has a monitoring unit (21), a knock regulating unit (20) and a fuel injector shut-off unit (22). At the same time the provision is made that the fuel injector shut-off unit (22) is operationally linked to the knock regulating unit (20) to achieve coordinated cylinder shut-off. The fuel injector shut-off unit (22) is provided with a memory medium (23) for storing a cylinder shut-off program.
Claims9
A method of cylinder shut-off in an internal combustion engine, in particular of a vehicle, according to a shut-off program,
- wherein the cylinders are shut off by coordinating the shut-off program with knock regulation of the individual cylinders of the internal combustion engine (10).
The method according to one of the preceding claims,
- wherein a classification of the cylinders (11, 12, 13, 14) in terms of a knock regulation-guide cylinder function is used as a cylinder shut-off criterion.
The method according to one of the preceding claims,
- wherein the cylinders are shut off corresponding to a hierarchy according to the classification of the cylinders (11, 12, 13, 14).
The method according to one of the preceding claims,
- wherein the cylinders (11, 12, 13, 14) are assigned according to the hierarchy, with decreasing cylinder shut-off priority, to the priority groups:
- guided cylinders, neutral cylinders and guide cylinders.
The method according to one of the preceding claims,
- wherein the specific fuel consumption of the respective cylinder (11, 12, 13, 14) is used as a cylinder shut-off criterion.
The method according to one of the preceding claims,
- wherein the cylinder shut-off takes place in the form of a shut-off of fuel injectors belonging to a cylinder which is to be shut off.
A device for cylinder shut-off in an internal combustion engine, in particular of a vehicle, using a control unit which is in effective operational contact with the cylinders of the internal combustion engine, having a monitoring unit, a knock regulating unit and a fuel injector shut-off unit,
- wherein the fuel injector shut-off unit (22) is operationally linked to the knock regulating unit (20) to achieve coordinated cylinder shut-off.
Dependencies are inferred from the claim text.