초록 ▼

An internal combustion engine with an exhaust turbocharger and an exhaust-gas recirculation device comprises a turbine, assigned to the exhaust turbocharger, in the exhaust section and a compressor in the intake duct, the turbine having at least two flow passages, via which exhaust gas can be fed to

An internal combustion engine with an exhaust turbocharger and an exhaust-gas recirculation device comprises a turbine, assigned to the exhaust turbocharger, in the exhaust section and a compressor in the intake duct, the turbine having at least two flow passages, via which exhaust gas can be fed to the turbine rotor. For the purpose of dimensioning the two flow passages, an asymmetry factor is determined as a function of the displacement of the internal combustion engine.

대표청구항 ▼

An internal combustion engine with an exhaust turbocharger and an exhaust-gas recirculation device comprises a turbine, assigned to the exhaust turbocharger, in the exhaust section and a compressor in the intake duct, the turbine having at least two flow passages, via which exhaust gas can be fed to

An internal combustion engine with an exhaust turbocharger and an exhaust-gas recirculation device comprises a turbine, assigned to the exhaust turbocharger, in the exhaust section and a compressor in the intake duct, the turbine having at least two flow passages, via which exhaust gas can be fed to the turbine rotor. For the purpose of dimensioning the two flow passages, an asymmetry factor is determined as a function of the displacement of the internal combustion engine. e in an exhaust gas is arranged in an engine exhaust passage, deposited particulate on the particulate filter can be continuously removed by oxidation without being accompanied by occurrence of a luminous flame when performing continuous combustion under a lean air-flow ratio, and a continuous oxidation removal region of the deposited particulate is determined by a temperature of the particulate filter and an amount of exhausted particulate exhausted from the engine, wherein an electric power device able to generate vehicle drive power separate from the vehicle drive power of the engine and able to generate electric power from the engine is provided and a battery for supplying electric power for driving the vehicle to the electric power device and for being charged by the electric power generated by the electric power device is provided; and, after the particulate filter finishes being warmed up at the time of engine startup, when the amount of exhausted particulate is greater than an amount of exhausted particulate at which the deposited particulate can be continuously removed by oxidation, an output torque of the engine is decreased from a required torque so that the amount of exhausted particulate becomes an amount at which the deposited particulate can be continuously removed by oxidation and the amount of decrease in output torque is compensated for by the vehicle drive power from the electric power device. 4. An exhaust gas purification device of an internal combustion engine in which a particulate filter for trapping particulate in an exhaust gas is arranged in an engine exhaust passage, deposited particulate on the particulate filter can be continuously removed by oxidation without being accompanied by occurrence of a luminous flame when performing continuous combustion under a lean air-flow ratio, and a continuous oxidation removal region of the deposited particulate is determined by a temperature of the particulate filter and an amount of exhausted particulate exhausted from the engine, wherein after the particulate filter finishes being warmed up at the time of engine startup, at the time of steady engine operation, a continuous oxidation removal region of deposited particulate is formed in a limited partial operating region of the operating region of the engine; an electric power device able to generate vehicle drive power separate from the vehicle drive power of the engine and able to generate electric power from the engine is provided and a battery for supplying electric power for driving the vehicle to the electric power device and for being charged by the electric power generated by the electric power device is provided; and, after the particulate filter finishes being warmed up at the time of engine startup, when the output torque of the engine is lower than an output torque of said limited partial operating region, the output torque of the engine is increased from the required torque so that the output torque of the engine becomes the output torque of the limited partial operating region and the amount of increase in output torque is consumed for the power generating action of the electric power device. 5. An exhaust gas purification device as set forth in claim 4, wherein before the particulate filter finishes being warmed up at the time of engine startup, the output torque of the engine is increased from the required torque and the amount of increase in output torque is consumed for the power generating action by the electric power device. 6. An exhaust gas purification device of an internal combustion engine in which a particulate filter for trapping particulate in an exhaust gas is arranged in an engine exhaust passage, deposited particulate on the particulate filter can be continuously removed by oxidation without being accompanied by occurrence of a luminous flame when performing continuous combustion under a lean air-flow ratio, and a continuous oxidation removal region of the deposited particulate is determined by a temperature of the particulate filter and an amount of exhausted particulate exhausted from the engine, wherein after the particulate filter finishes being warmed up at the time of engine startup, at the time of steady engine operation, a continuous oxidation removal region of deposited particulate is formed in a limited partial operating region of the operating region of the engine; an electric power device able to generate vehicle drive power separate from the vehicle drive power of the engine and able to generate electric power from the engine is provided and a battery for supplying electric power for driving the vehicle to the electric power device and for being charged by the electric power generated by the electric power device is provided; and, after the particulate filter finishes being warmed up at the time of engine startup, when the output torque of the engine is higher than an output torque of said limited partial operating region, the output torque of the engine is decreased from the required torque so that the output torque of the engine becomes the output torque of the limited partial operating region and the amount of decrease in output torque is compensated for by the vehicle drive power of the electric power device. 7. An exhaust gas purification device of an internal combustion engine in which a particulate filter for trapping particulate in an exhaust gas is arranged in an engine exhaust passage, deposited particulate on the particulate filter can be continuously removed by oxidation without being accompanied by occurrence of a luminous flame when performing continuous combustion under a lean air-flow ratio, and a continuous oxidation removal region of the deposited particulate is determined by a temperature of the particulate filter and an amount of exhausted particulate exhausted from the engine, wherein an electric power device able to generate vehicle drive power separate from the vehicle drive power of the engine and able to generate electric power from the engine is provided, a battery for supplying electric power for driving the vehicle to the electric power device and for being charged by the electric power generated by the electric power device is provided, and estimating means for estimating the amount of deposited particulate on the particulate filter is provided; when it is estimated by the estimating means that the amount of deposited particulate on the particulate filter has exceeded a predetermined allowable amount, when the temperature of the particulate filter is lower than a temperature at which the deposited particulate can be continuously removed by oxidation, the output torque of the engine is increased from the required torque so that the temperature of the particulate filter becomes a temperature at which the deposited particulate can be continuously removed by oxidation and the amount of increase of the output torque is consumed by the power generating action of the electric power device. 8. An exhaust gas purification device as set forth in claim 7, wherein further provision is made of a detecting means for detecting a pressure loss at the particulate filter and wherein said estimating means estimates that the amount of deposited particulate on the particulate filter has exceeded the allowable amount when said pressure loss has exceeded a set value. 9. An exhaust gas purification device as set forth in claim 7, wherein further provision is made of a calculating means for calculating the amount of deposited particulate on the particulate filter based on the temperature of the particulate filter and an amount of exhausted particulate from the engine and wherein said estimating means estimates that the amount of deposited particulate on the particulate filter has exceeded the allowable value when the amount of deposited particulate calculated by said calculating means has exceeded an allowable amount. 10. An exhaust gas purification device of an internal combustion engi