Method for generating a homogeneous mixture for auto-ignition internal combustion engines and for controlling the combustion process
First Claim
1. A method for generating a homogeneous mixture for an auto-ignition internal combustion engine and for controlling a combustion process, the internal combustion engine including an injection system and at least one cylinder/piston unit connected to an intake device and having a combustion space, the method comprising the steps of:
- one of recirculating hot exhaust gas from a previous combustion cycle into one of the combustion space and the intake device and retaining hot exhaust gas in one of the combustion space and the intake device;
injecting fuel by the injection system into the one of the recirculated hot exhaust gas and the retained hot exhaust gas to generate a homogeneous fuel/air mixture;
cooling the homogenized fuel/air mixture by at least one of expansion cooling in the respective cylinder/piston unit, isentropic compression in the respective cylinder/piston unit, expansion cooling of fuel/air mixture homogenized in at least one further cylinder/piston unit, external cooling of a fuel/air mixture homogenized in at least one further cylinder/piston unit; and
recirculating the cooled fuel/air mixture into the intake device.
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Abstract
A method for generating a homogeneous mixture for auto-ignition internal combustion engines and for controlling the combustion process, the internal combustion engine having an injection system and at least one cylinder/piston unit connected to an intake device, includes the steps of:
a) exhaust-gas recirculation of hot exhaust gas from a previous combustion cycle into the combustion space or into the intake device or exhaust-gas retention of this exhaust gas in the combustion space or in the intake device;
b) injection of fuel by the injection system into the retained or recirculated hot exhaust gas in order to generate a homogeneous fuel/air mixture; and
c) cooling of the homogenized fuel/air mixture by expansion cooling or by isentropic compression in the respective cylinder/piston unit and/or by expansion cooling or by external cooling of a fuel/air mixture homogenized in at least one further cylinder/piston unit and recirculation of the cooled fuel/air mixture into the intake device.
32 Citations
13 Claims
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1. A method for generating a homogeneous mixture for an auto-ignition internal combustion engine and for controlling a combustion process, the internal combustion engine including an injection system and at least one cylinder/piston unit connected to an intake device and having a combustion space, the method comprising the steps of:
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one of recirculating hot exhaust gas from a previous combustion cycle into one of the combustion space and the intake device and retaining hot exhaust gas in one of the combustion space and the intake device;
injecting fuel by the injection system into the one of the recirculated hot exhaust gas and the retained hot exhaust gas to generate a homogeneous fuel/air mixture;
cooling the homogenized fuel/air mixture by at least one of expansion cooling in the respective cylinder/piston unit, isentropic compression in the respective cylinder/piston unit, expansion cooling of fuel/air mixture homogenized in at least one further cylinder/piston unit, external cooling of a fuel/air mixture homogenized in at least one further cylinder/piston unit; and
recirculating the cooled fuel/air mixture into the intake device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification