Method for operating an internal combustion engine
First Claim
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1. A method for operating an internal combustion engine having multiple cylinders, in which at least a partial set of the cylinders is temporarily shut off, the method comprising:
- briefly introducing fuel into at least one of the shut off cylinders and combusting fuel in an at least substantially torque-neutral way during a cylinder shut off period, wherein the introducing of the fuel does not turn the at least one of the shut off cylinders back on.
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Abstract
An internal combustion engine includes multiple cylinders. A partial set of the cylinders may be temporarily shut off. Fuel is introduced briefly into at least one of the shut off cylinders and combusted in an at least essentially torque-neutral way during the cylinder shut off period.
35 Citations
11 Claims
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1. A method for operating an internal combustion engine having multiple cylinders, in which at least a partial set of the cylinders is temporarily shut off, the method comprising:
briefly introducing fuel into at least one of the shut off cylinders and combusting fuel in an at least substantially torque-neutral way during a cylinder shut off period, wherein the introducing of the fuel does not turn the at least one of the shut off cylinders back on. - View Dependent Claims (2, 3, 4, 5, 6, 8)
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7. A method for operating an internal combustion engine having multiple cylinders, in which at least a partial set of the cylinders is temporarily shut off, the method comprising:
briefly introducing fuel into at least one of the shut off cylinders and combusting fuel in an at least substantially torque-neutral way during a cylinder shut off period, wherein the introducing of the fuel does not turn the at least one of the shut off cylinders back on, and wherein at least one of (a) an instant of at least one of an injection and the combustion of fuel and (b) a fuel quantity injected into the at least one shut off cylinder is a function of at least one of a temperature of the internal combustion engine, a number of operating cycles since a last combustion and a current engine speed.
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9. A computer-readable medium containing a computer program which when executed by a processor performs a method for operating an internal combustion engine having multiple cylinders, in which at least a partial set of the cylinders is temporarily shut off, the method comprising:
briefly introducing fuel into at least one of the shut off cylinders and combusting fuel in an at least substantially torque-neutral way during a cylinder shut off period, wherein the introducing of the fuel does not turn the at least one of the shut off cylinders back on. - View Dependent Claims (10)
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11. A control/regulating unit for operating an internal combustion engine having multiple cylinders, in which at least a partial set of the cylinders is temporarily shut off, the operating performing a method the method comprising:
briefly introducing fuel into at least one of the shut off cylinders and combusting fuel in an at least substantially torque-neutral way during a cylinder shut off period, wherein the introducing of the fuel does not turn the at least one of the shut off cylinders back on.
Specification