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method for adjustment

A technology of adjustment device and adjustment range, applied in the direction of electrical control, machine/engine, mechanical equipment, etc., can solve problems such as can not be accurately determined

Active Publication Date: 2021-07-13
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] By adopting a structure based on an integrated characteristic curve, i.e. with the current rated value structure, overvibration cannot be avoided, since the maximum possible air quantity is physically limited by system parameters such as boost pressure, temperature, The air consumption of the engine, system changes over its lifetime and driver behavior influence and cannot be determined precisely

Method used

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Embodiment Construction

[0020] The invention is shown schematically in the drawing on the basis of an embodiment and is described in detail below with reference to the drawing.

[0021] figure 1 The schematic diagram shows an internal combustion engine 10 which has an exhaust gas recirculation system 12 . In this case, the internal combustion engine 10, which is designed as a diesel engine, has four cylinders 14, and the driver's torque demand m is maintained by actuating the gas pedal. F 16 and supply speed n 20.

[0022] In this embodiment, the exhaust gas recirculation system 12 comprises a high-pressure exhaust gas recirculation system 30 (HD-AGR) and a low-pressure exhaust gas recirculation system 32 (ND-AGR). An HD cooler 34 with a bypass 36 and an HD-AGR valve 38 are provided in the high-pressure exhaust gas recirculation system 30 . The low-pressure exhaust gas recirculation system 32 includes an ND cooler 40 with a bypass 42 and an ND-AGR valve 44 . Furthermore, the figure shows a muffle...

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Abstract

The invention relates to a method for regulating, in particular a method for regulating a technical variable and a corresponding regulating device are proposed. The setpoint value of the manipulated variable used, calculated in the control range, thus exceeds a physically possible value in the time range before the first point in time, wherein at a second point in time before the first point in time, it is determined dynamically For the predicted setpoint value of the manipulated variable.

Description

technical field [0001] The invention relates to a method for regulating, in particular in a motor vehicle, and to a regulating device for carrying out the method. The method is used in particular to regulate the air volume in exhaust gas recirculation. Background technique [0002] One method for reducing pollutant emissions in internal combustion engines used, for example, in motor vehicles is described by exhaust gas recirculation (AGR). In this method, part of the exhaust gas is led back into the intake tract of the internal combustion engine, thereby reducing the maximum combustion temperature and, in particular in the case of diesel engines, reducing the amount of nitrogen oxides. As far as gasoline engines are concerned, exhaust gas recirculation is mainly used to reduce fuel consumption. [0003] Within the scope of the exhaust gas recirculation control, the quantity of exhaust gas recirculated and the quantity of fresh air flowing in and thus the mixture of exhaust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/00F02D21/08F02D9/02F02D9/04
CPCF02D9/02F02D9/04F02D21/08F02D41/0007F02D41/0047F02D2041/0022F02D41/1401F02D23/02F02D41/0052F02M26/05F02M26/06F02M26/25F02M26/24Y02T10/12Y02T10/40
Inventor S.米歇尔
Owner ROBERT BOSCH GMBH