摘要:
Disclosed is a device for determining the exhaust gas recirculation rate (AGR) of an internal combustion engine, comprising a tubular sensor unit which can be impinged upon by an exhaust gas atmosphere in a first area in an exhaust gas recirculation pipe and by an exhaust gas-fresh air atmosphere in a second area in an intake pipe of the internal combustion engine downstream from an inlet of the exhaust gas recirculation pipe. An inside of the sensor unit can be impinged upon by the exhaust gas atmosphere while an outside thereof can be impinged upon by the exhaust gas-fresh air atmosphere, or vice versa.
摘要:
The invention relates to a fuel supply system for an internal combustion engine, comprising a fuel tank for liquid fuel, a fuel preparation device which, on the admission side, receives the fuel, produces at least two fuel parts therefrom and outputs them, in addition to comprising adjusting means which make it possible to provide the respective fuel parts and fuel for the internal combustion engine in a separate manner according to specific operating conditions. In order to adapt the fuel to the requirements of the internal combustion engine in a better manner, the adjusting means include a mixed arrangement which receives the fuel and/or fuel parts on the admission side, produces a predetermined fuel mixture for a current operational state of the internal combustion engine by mixing according to any specific operational states and provides said engine with said mixture.
摘要:
The invention relates to a sensor (40) for monitoring and controlling catalysts, especially motor vehicle catalysts, and to a method for controlling the operation of a catalyst, especially a catalyst used in emission purification systems in motor vehicles. According to the invention, the sensor (40) is embodied as a temperature probe which is provided with a catalytic coating (50). According to the inventive method, in order to carry out the control, a catalytically coated temperature probe (40) is used, at least partial quantities and/or the type of reagents supplied to the catalyst being controlled by said sensor (40). The invention can be applied in a general manner to the monitoring and/or control of catalytic processes, especially for monitoring and controlling the catalytically supported emission purification in motor vehicles.
摘要:
The invention relates to a fuel supply installation for an internal combustion engine, comprising a fuel tank (2) for liquid fuel (3), a fuel pump (5) which induces fuel from the fuel tank (2), subjects said fuel to an injection pressure and makes it available to the internal combustion engine, a fuel fractionating unit (9) which creates at least one liquid fraction from the fuel and comprising an accumulator (35) which receives the liquid fuel fraction from the fuel fractionating unit (9), stores the same and makes it available to the internal combustion engine. The fuel supply installation supplies the available fuel fraction and the available fuel to the internal combustion engine as and when required. In order for the fuel fraction and the fuel to be made available to the internal combustion engine at the same pressure, the accumulator (35) is configured as a pressure accumulator, whereby pressure generating elements (5, 48, 15) are provided which are used to subject the fuel fraction in the pressure accumulator to the injection pressure.
摘要:
A device, for determination of the state of a soot particle filter (13) on a motor vehicle, comprising an electrical measuring arrangement as soot sensor, for determination of soot deposition, is disclosed. The measuring arrangement comprises an electrical component with a circuit structure (22, 23), for activation of an electrical or magnetic field, influenced by the soot deposition and characterising an electrical or magnetic parameter of the component and measuring means (24), for recording the electrical or magnetic parameter of the component as a measure of the soot deposition. According to the invention, the circuit structure (22, 23) is arranged such that the electrical field passes through a partial volume region of the soot particle filter (13) and the partial volume region is a part of the component.
摘要:
The invention relates to a sensor (40) for monitoring and controlling catalysts, especially motor vehicle catalysts, and to a method for controlling the operation of a catalyst, especially a catalyst used in emission purification systems in motor vehicles. According to the invention, the sensor (40) is embodied as a temperature probe which is provided with a catalytic coating (50). According to the inventive method, in order to carry out the control, a catalytically coated temperature probe (40) is used, at least partial quantities and/or the type of reagents supplied to the catalyst being controlled by said sensor (40). The invention can be applied in a general manner to the monitoring and/or control of catalytic processes, especially for monitoring and controlling the catalytically supported emission purification in motor vehicles.
摘要:
In known high-temperature sensors, the operating temperature in the functional layer of the sensor cannot be accurately adjusted or measured nor exactly regulated. The novel device aims at enabling exact adjustment of the operating temperature on the entire surface of the functional layer. In order to exactly regulate the operating temperature on the entire functional layer, the heating conductor path that is disposed beneath the functional layer is structured in such a way that it comprises different partial heat resistors in the different regions by varying the length of the paths and/or the width of the heating conductor path vary from one partial section to another. Said devices are especially high-temperature gas sensors that are used in the exhaust gas of an internal combustion engine.
摘要:
The invention relates to an impedimetric exhaust gas sensor (1) for detecting a gaseous component in exhaust gases of an internal combustion engine comprising a control and evaluation unit and a sensor unit (2) embodied in the form of an electrode pattern (20) which is provided with a first terminal (4) and a second terminal (5). A method for operating said exhaust gas sensor (1) is also disclosed. In order to prevent the sensor signal drift, the control and evaluation unit applies a bias voltage (17) to the first (4) and/or second (5) terminals of the electrode pattern (20), the bias voltage value being adjustable according to the sensor characteristic and/or the charge thereof.
摘要:
The invention relates to an impedimetric exhaust gas sensor (1) for detecting a gaseous component in exhaust gases of an internal combustion engine comprising a control and evaluation unit and a sensor unit (2) embodied in the form of an electrode pattern (20) which is provided with a first terminal (4) and a second terminal (5). A method for operating said exhaust gas sensor (1) is also disclosed. In order to prevent the sensor signal drift, the control and evaluation unit applies a bias voltage (17) to the first (4) and/or second (5) terminals of the electrode pattern (20), the bias voltage value being adjustable according to the sensor characteristic and/or the charge thereof.
摘要:
The invention relates to a fuel supply system for an internal combustion engine, comprising a fuel tank for liquid fuel, a fuel preparation device which, on the admission side, receives the fuel, produces at least two fuel parts therefrom and outputs them, in addition to comprising adjusting means which make it possible to provide the respective fuel parts and fuel for the internal combustion engine in a separate manner according to specific operating conditions. In order to adapt the fuel to the requirements of the internal combustion engine in a better manner, the adjusting means include a mixed arrangement which receives the fuel and/or fuel parts on the admission side, produces a predetermined fuel mixture for a current operational state of the internal combustion engine by mixing according to any specific operational states and provides said engine with said mixture.