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Method and control device for determining error of the oil ejecting execution element ejection quantity

A control device and injection quantity technology, applied in fuel injection control, electrical control, engine control, etc., can solve the problems of exhaust gas quality, engine noise, etc., and achieve the effect of preventing unwanted disappearance, reliable and accurate compensation

Inactive Publication Date: 2012-09-05
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Small changes in the amount of pre-injection actually injected can have serious effects on exhaust gas quality and engine noise

Method used

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  • Method and control device for determining error of the oil ejecting execution element ejection quantity
  • Method and control device for determining error of the oil ejecting execution element ejection quantity
  • Method and control device for determining error of the oil ejecting execution element ejection quantity

Examples

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Embodiment Construction

[0019] figure 1 An internal combustion engine 10 with a fuel injection system 12 , an angle sensor 14 , a control device 16 and a driver's will sensor 18 is shown in detail. Fuel injection system 12 has at least one fuel injection actuator 20 . Injection actuator 20 is designed as an injector with which fuel is individually metered into a combustion chamber of internal combustion engine 10 . The internal combustion engine 10 is preferably a diesel engine, but the invention is not limited to diesel engines, but gasoline engines and Wankel engines can also be used.

[0020] Driver desire sensor 18 is used to detect the torque request of internal combustion engine 10 . If the internal combustion engine 10 is used as a motor for a road vehicle, the torque request is given by the driver. As an alternative or in addition, however, the torque request can also be predetermined by a function of the vehicle which is carried out in the control unit 16 or in another control unit of the...

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PUM

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Abstract

The present invention relates to a method for determining the deviation (F) of practical injection amount and preconcerted reference amount of a fuel injection system (12) of an internal combustion engine (10) with at least a controllable oil spraying executing element (20), in this method, different combustion courses have different oil injection modes, each combustion course injecting a certainwork point needed practical injection amount (QLL) into the internal combustion engine (10); the deviation (F) is determined by comparing the reference amount formed from a first oil spraying mode with the reference amount formed by a second oil spraying mode. The characteristic of this method is, the first oil spraying mode (35) has x single oil spray, the second oil spraying mode (37) has y single oil spray, wherein x and y are separately more than 1, and x is not equal to y. Furthermore, the present invention relates to a controlling device, the controlling device is set for applying this method.

Description

technical field [0001] The invention relates to a method for determining the deviation of an actual injection quantity of a fuel injection system of an internal combustion engine from a predetermined reference quantity, and to a method for determining the actual injection quantity and control device of a fuel injection system of an internal combustion engine having at least one triggerable injection actuator. A device for controlling deviations from a predetermined reference quantity. Such a method and a control device are known from DE 103 43 759 A1. Background technique [0002] In order to achieve the best noise characteristics and exhaust gas characteristics of internal combustion engines, modern internal combustion engines place high demands on the accuracy of fuel injection timing and injection quantity. When triggering an injection actuator such as a fuel injector, manufacturing-related and aging-related tolerances can lead to deviations in the actually injected inje...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/24
CPCF02D41/40Y02T10/44F02D41/2438F02D41/247Y02T10/40
Inventor T·丁格勒S·农南马彻
Owner ROBERT BOSCH GMBH
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