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Method for operating an engine control device

A technology of controllers and actuators, applied in engine control, machine/engine, electrical control, etc., can solve problems such as power semiconductors and integrated circuit controllers becoming hot, and achieve the effect of expanding the temperature range

Inactive Publication Date: 2015-02-18
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the current flows through the power semiconductor, the corresponding power loss decreases, and the power loss causes the power semiconductor, the integrated circuit and the entire controller to heat up

Method used

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  • Method for operating an engine control device

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Embodiment Construction

[0023] The internal combustion engine 100 of the vehicle is figure 1 The common rail injection system shown schematically in has a tank 110 from which a high-pressure pump 120 delivers fuel at high pressure via a line 125 to a common accumulator 130 , the so-called rail. Injection valves 141 , 142 , 143 , 144 , which inject fuel under high pressure into combustion chambers 101 , 102 , 103 , 104 of internal combustion engine 100 , are connected to rail 130 via lines 131 , 132 , 133 , 134 .

[0024] The rail is connected to tank 110 via a pressure limiting valve 135 via a return line 137 . Injection valves 141 , 142 , 143 , 144 likewise have return lines 151 , 152 , 153 , 154 , which lead into line 137 . Injectors 141 , 142 , 143 , 144 can be activated via electrical control lines 181 , 182 , 183 , 184 by a computing unit 190 , the so-called engine controller. High-pressure pump 120 can likewise be activated by engine controller 190 via electrical control line 186 . For this ...

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PUM

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Abstract

The invention relates to a method for operating a control device (190) that is configured to actuate an internal combustion engine (100), said control device (190) comprising at least two power semi-conductor components (191, 192, 193, 194) that are operated so as to generate output signals which can be applied to actors (141, 142, 143, 144) of the internal combustion engine (100) for the purpose of actuating the internal combustion engine. To avoid damage to the power semi-conductor components (191, 192, 193, 194) caused by temperature, a first of the power semi-conductor components (191, 192, 193, 194) is operated taking a switching state of at least one second of the power semi-conductor components (191, 192, 193, 194) into consideration.

Description

technical field [0001] The invention relates to a method for operating an engine control unit, a correspondingly arranged engine control unit as well as a computer program and a data carrier. Background technique [0002] The engine control unit (ECU) is used to operate and control the internal combustion engine in order to adjust the process parameters (fuel injection quantity, ignition timing, air mass, etc.), in particular by means of actuators, in such a way that the internal combustion engine behaves in a desired manner work and can provide the required torque for the driven vehicle. The engine controller has power semiconductors, especially transistors, diodes, etc., independently or in the form of an integrated circuit, which switches for the connected actuators (e.g. injection valves, throttle valves, AGR valves, oxygen sensors, heating ) of the trigger current. In this context, semiconductor components are referred to as power semiconductors, which are designed to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/20H01F7/18
CPCF02D41/26F02D41/1494F02D2041/2082F02D41/20
Inventor A.奥厄M.W.哈斯
Owner ROBERT BOSCH GMBH