摘要:
A method for operating an internal combustion engine by introducing air, in which the air is conducted into the induction region of the internal combustion engine following shutoff of the internal combustion engine. If necessary, the intake valves and the exhaust valves of at least one cylinder are moved into a position in which at least one intake valve and one exhaust valve of a combustion chamber of the internal combustion engine are open simultaneously. The method may be used in for an internal combustion engine having an electric turbocharger for the introduction of air.
摘要:
A method for operating an internal combustion engine by introducing air, in which the air is conducted into the induction region of the internal combustion engine following shutoff of the internal combustion engine. If necessary, the intake valves and the exhaust valves of at least one cylinder are moved into a position in which at least one intake valve and one exhaust valve of a combustion chamber of the internal combustion engine are open simultaneously. The method may be used in for an internal combustion engine having an electric turbocharger for the introduction of air.
摘要:
A method for operating an internal combustion engine (1), especially of a motor vehicle, is described. Air and fuel are supplied to a combustion chamber (4) of the internal combustion engine (1) and exhaust gas is recirculated to the combustion chamber (4). The exhaust gas is recirculated to the combustion chamber (4) during overrun operation of the internal combustion engine (1).
摘要:
The invention relates to a heating and/or cooling system (2) for a motor vehicle with a combustion engine (4) and a catalytic converter (8) arranged in the exhaust gas path (6) of the combustion engine (4), comprising a burner (10) attached before the catalytic converter (8) to the exhaust gas path (6) as well as a heat exchanger (12) for transmitting heat generated in the burner (10) to a heating and/or cooling circuit (28) of the motor vehicle. It is proposed that the heat exchanger (12) be arranged behind the catalytic converter (8) in the exhaust gas path (6) of the combustion engine (4) and can be acted upon through the catalytic converter (8) with hot combustion gases from the burner (10).
摘要:
In a method and a device for operating an electrical supercharger, the electrical supercharger is actuated for cooling and/or diagnostic purposes in the non-combustion operation of the internal combustion engine.
摘要:
An internal combustion has an exhaust gas line, an exhaust gas heat exchanger through which exhaust gas withdrawn through the exhaust gas line passes so as to take heat energy, a heating heat exchanger to which the withdrawn heat energy is made available and which is connected to a cooling fluid circuit of the internal combustion engine, an exhaust gas turbocharger provided with a turbine housing and a turbine wheel rotatable in the latter, the exhaust gas turbocharger being arranged in the exhaust gas line, the exhaust gas heat exchanger being connected heat conductively with the turbine housing of the exhaust gas turbocharger for withdrawing of heat from the exhaust gas which passes through the turbine wheel.
摘要:
The invention relates to a method for combustion misfire detection and cylinder equalization in a multi-cylinder internal combustion engine having knock control. In the method, rough-running values are individually determined for each cylinder by measuring segment times with each crankshaft rotation. The segment times include the times corresponding to the piston movement of each cylinder to be measured in which the crankshaft passes through a corresponding circular-segment angular region. Thereafter, the determined rough-running values are compared to a threshold value in a desired value comparison and, on the basis of the deviation between the determined rough-running values and the desired value, cylinder-individual equalization factors (that is, correction factors) are computed in an evaluation unit for the change of injection times or ignition time points of the individual cylinders. It is provided that the computed equalization factors (GL1) for the change of injection times or the ignition time points or the charge serve as the basis for the determination of a rough-running increase value (LUTcorrected) effected by the change and that, with the determined rough-running increase value (LUTcorrected), a computation of a corrected rough-running value (dLUT) takes place. The corrected rough-running value (dLUT) is utilized for the computation of the final equalization factor (GL2) for influencing injection times or ignition time points or the charge.
摘要:
An internal combustion engine has at least one combustion chamber which may be closed by an intake valve, at least one air intake port which leads to the intake valve, and a fuel injection device which in association with the at least one combustion chamber has a first injector and a second injector for the metered injection of fuel into at least one intake port. To achieve significantly improved mixture preparation and combustion of the fuel-air mixture in the combustion chamber, the two injectors are configured such that the first injector injects a widely divergent spray cone having a large cone angle, and the second injector injects an only slightly divergent spray cone having a much smaller cone angle.
摘要:
A method for starting a combustion engine including a starter and a speed sensor that supplies an output signal as a function of speed, and a device for measuring the vehicle system voltage to record a characteristic curve of the battery voltage during a starting phase and after the starting phase. The crankshaft position is ascertained from the characteristic curve of the battery voltage, during the starting phase of the combustion engine, in starter operation.
摘要:
The functionality of the device for variably adjusting the cylinder compression ratio can be monitored easily, and without a special sensor, by ascertaining the running irregularity of the internal combustion engine both before and after controlling the device for changing the cylinder compression ratio; and by comparing the two running-irregularity values to each other, in order to determine if the runningirregularity has changed. A change in the running irregularity is an indication that the device for variably adjusting the cylinder compression ratio is functioning correctly.