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Method and control device for calculating adjustment limit for determining assumed real moment

A technology of actual torque and rated torque, applied in electrical control, engine control, fuel injection control and other directions, which can solve the problem of not considering the engine adjustment limit.

Active Publication Date: 2014-02-19
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tuning limits of the engine's internal physics have so far not considered these effects

Method used

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  • Method and control device for calculating adjustment limit for determining assumed real moment
  • Method and control device for calculating adjustment limit for determining assumed real moment
  • Method and control device for calculating adjustment limit for determining assumed real moment

Examples

Experimental program
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Embodiment Construction

[0031] figure 1 A block diagram is shown schematically of an engine system 1 with an internal combustion engine 2 , which is coupled via its drive train 3 to a gearshift gearbox 4 . The shift reduction gearbox 4 includes a gearbox device 5 and a clutch device 6, and is triggered by a gearbox control device 7 to achieve engagement and disengagement and switching between gears. The gearbox control device 7 provides the gearbox torque M Getriebe , which generates rated torque M in the engine control device 8 soll′ be considered when. The gearbox torque M provided by the gearbox control device 7 Getriebe Can take positive and negative values.

[0032] The internal combustion engine 2 follows a predetermined setpoint torque M soll and other torque requirements M sonst and gearbox torque M Getriebe Triggering is carried out, whereby the setpoint torque M generated in the engine control unit 8 is ascertained soll′ . The generated nominal moment M soll′ For example, M is req...

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Abstract

The method involves selecting one of torque models for providing efficiency limit based on influence of the efficiency limit, where the influence takes place during active interventional function, and the efficiency limit corresponds to a largest possible or smallest possible efficiency. The largest possible or smallest possible efficiency is actually provided by an internal combustion engine (2). A control limit for a hypothetical actual torque is determined based on information of an optimal toque and the efficiency limit. Independent claims are also included for the following: (1) a control unit for determining a control limit for a hypothetical actual torque of an internal combustion engine (2) a computer program comprising a program code to perform a method for determining a control limit for a hypothetical actual torque of an internal combustion engine.

Description

technical field [0001] The present invention generally relates to ascertaining an assumed actual torque in an internal combustion engine, which gives the actual torque output if intervention functions of the internal combustion engine do not have an effect on the torque specification. Background technique [0002] The internal combustion engine in a car is generally triggered by means of a predetermined torque, which is converted into engine parameters using an engine model, which corresponds to direct adjustments of the internal combustion engine, such as ignition angle, fuel injection quantity, throttle adjustment, etc. . When providing a predetermined torque, in modern automobiles, generally multiple control functions or control devices that communicate with each other, such as engine control devices, gearbox control devices, ESP control devices, etc. participate in the control, and they provide their own torque settings. value, which is taken into account in the predete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/00
CPCF02D2250/26F02D2250/18F02D2200/0402F02D2200/1004F02D41/023F16H63/502
Inventor M·沃格尔格桑B·克洛茨
Owner ROBERT BOSCH GMBH
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