摘要:
In a method of operating a diesel internal combustion engine, wherein a homogeneous mixture is formed in the combustion space before a spontaneous ignition by means of fuel injected directly into separately supplied combustion air, which combustion air is admitted to the combustion space in a swirling flow about the longitudinal axis of the cylinder that can be adjusted as regards its swirl intensity by a control element. A control unit adjusts the swirl intensity in a manner coordinated with the injection parameters to provide a homogeneous mixture igniting at a predetermined point for highly effective engine operation with low emissions.
摘要:
In a method of operating a compressor near the compressor pumping limit wherein the compressor includes a control arrangement for adjusting the momentary operating state of the compressor, the flow velocity of a mass flow through the compressor in the boundary layer along the wall of the flow passage is determined for detecting operation of the compressor close to the pumping limit from a reversal of the direction of the mass flow vector in the boundary layer and the control arrangement is actuated so as to prevent the compressor from transgressing the pumping limit.
摘要:
In a method of operating a compressor near the compressor pumping limit wherein the compressor includes a control arrangement for adjusting the momentary operating state of the compressor, the flow velocity of a mass flow through the compressor in the boundary layer along the wall of the flow passage is determined for detecting operation of the compressor close to the pumping limit from a reversal of the direction of the mass flow vector in the boundary layer and the control arrangement is actuated so as to prevent the compressor from transgressing the pumping limit.
摘要:
In a motor vehicle drive arrangement having an electric motor with a rotor for driving an oil pump and being supported in an air space of a housing by a rotor disk of the rotor of the electric motor which is permanently connected to a pump rotor of the oil pump, a freewheeling mechanism for a mechanical drive of the pump rotor of the oil pump is provided for coupling the oil pump to a vehicle travel drive train of the vehicle drive arrangement when the travel drive train rotates faster than the electric motor.
摘要:
A method for operating an internal combustion engine used as a fuel which, special fuel characteristics, during combustion by compression ignition may achieve a favorable efficiency, and may provide consumption advantages over conventional combustion methods using conventional fuels. The fuel used may be straight-run naphtha, which is also known as raw gasoline. The fuel characteristics of this fuel are less expensive than conventional fuels, since expensive further treatment of the fuel may be dispensed with during production.
摘要:
The invention is based on a sliding valve (10) having a sliding sleeve (12) which is axially displaceable in a control cylinder (13) and which controls, with at least one control face (23) on its outer periphery, at least one control opening (17, 18) in the control cylinder (13) out. It is proposed that the control face (23) is radially elastically flexible in the direction of the control cylinder (13).
摘要:
A valve guide arrangement for a valve in a bypass or shunt duct of exhaust gas ducting equipment of naturally induced or supercharged engines, in which arrangement the stem of the valve is caused to slide in a valve guide formed as a bush and fixed rigidly in a housing part and an annular space is provided under the valve guide and surrounding the valve stem and operating as a settling space, this annular space being connected with the bypass or shunt duct by means of an annular gap operating as a throttle and formed by the valve stem and the housing part.The object of this special valve guide arrangement is to prevent valve jamming due to the solid exhaust-gas constituents found in the exhaust gas flow.
摘要:
In a sleeve element for the axially fixing at least one bearing of a rotatable shaft, in particular a shaft of an exhaust gas turbocharger, which sleeve element has at least one through-opening in its circumferential surface, the at least one through-opening has a substantially conical shape in the radial direction of the sleeve element at least in a section thereof, and also in a turbocharger for an internal combustion engine, which comprises a speed detection device and a sleeve element for axially fixing at least one bearing of a shaft of the turbocharger, wherein the sleeve element has at least one opening through which the speed detection device extends and which has a substantially conical shape in the radial direction of the sleeve element at least in a section thereof.
摘要:
In an engine braking method and an internal combustion engine including an engine braking arrangement, wherein the engine has high pressure and low pressure exhaust gas turbochargers connected in series, with a bypass (12) around the high-pressure compressor allowing the air mass flow selectively to bypass the high pressure compressor which is arranged near the engine, and bypasses around both turbines permitting the exhaust gas mass flow selectively to bypass the high-pressure exhaust gas turbine which is near the engine and also the low pressure turbine the intake air and the exhaust gas flow are controlled so as to accurately provide for a desired engine braking power for example for maintaining a desired vehicle speed.
摘要:
In a compressor of a turbocharger of an internal combustion engine comprising a housing with an inflow channel; a compressor impeller arranged in the inflow channel; and a bypass channel which has a first flow opening upstream of the compressor impeller inlet, a second flow opening downstream of the compressor impeller inlet and an axial annular chamber which connects the first and the second flow openings. An axial vane structure is provided in the axial annular chamber of the bypass channel, which imparts a swirl direction corresponding to that of the air mass flow in the inflow channel to the air mass flowing through the bypass channel from the second to the first flow opening.