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Method for driving an internal combustion engine with the support of an electric machine and the internal combustion engine

A technology for internal combustion engines, machines, applied in the arrangement of multiple different prime movers of machines/engines, general power units, motor vehicles, etc., to achieve the effect of improving quiet operation, fluctuation or oscillation suppression

Active Publication Date: 2016-10-12
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the known adjustment method can only adjust the injector characteristic when the injection quantity is small

Method used

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  • Method for driving an internal combustion engine with the support of an electric machine and the internal combustion engine
  • Method for driving an internal combustion engine with the support of an electric machine and the internal combustion engine
  • Method for driving an internal combustion engine with the support of an electric machine and the internal combustion engine

Examples

Experimental program
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Embodiment Construction

[0040] figure 1 Shown is a partial schematic view of a motor vehicle provided with an internal combustion engine 1 . The internal combustion engine has an intake duct 4 and an exhaust duct 5 . The internal combustion engine is provided with an injection system, the four injectors 20 of which are shown schematically.

[0041] The torque generated by the internal combustion engine 1 is output via the output shaft 2 and the transmission 6 to a drive system 7 with which the rear wheels of the motor vehicle are driven. Connected to the output shaft 2 is an electric machine 3 , for example a starter generator, which is connected to an inverter 10 .

[0042] Internal combustion engine 1 also has a control unit 8 (ECU), with which injectors 20 for delivering a desired fuel quantity are controlled. Furthermore, the control 8 is connected to the electric machine 3 via a bus 11 leading to an inverter 10 . The rotational speed of output shaft 2 of internal combustion engine 1 is measu...

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PUM

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Abstract

A method for operating an internal combustion engine is presented, in which test injections are carried out in order to adjust injection parameters for controlling the injection process during operation of the internal combustion engine. For this purpose, during the test injection, a negative torque pulse is generated by an electric machine coupled to the internal combustion engine, which counteracts the torque pulse generated by the test injection, in synchronization with the positive torque pulse generated by the test injection . In this way, rotational speed fluctuations due to test injections are avoided. This internal combustion engine will also be presented.

Description

technical field [0001] The invention relates to a method for operating an internal combustion engine provided with at least one injector with the aid of an electric machine, wherein test injections are carried out in order to adjust injector parameters for controlling the injection process during operation of the internal combustion engine. The invention also relates to an internal combustion engine with at least one injector, a control unit and electrical machines supporting the internal combustion engine. The invention relates in particular to diesel engines or lean-running gasoline engines. Background technique [0002] Injectors of internal combustion engines have tolerances which lead to undesired inaccuracies in the injected fuel quantity and thus to a deterioration in the quality of the emissions from the internal combustion engine. This can be prevented by adjusting the injector characteristic during operation of the internal combustion engine. It is known for gaso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/12F02D41/14B60W10/08
CPCB60W10/08F02D41/123F02D41/1497F02D41/2438F02D41/2467F02D2200/1004B60K6/48B60W10/06B60W30/20B60W2050/0039B60W2510/0638B60W20/50Y02T10/62F02D41/12F02D41/14F02M2200/8092
Inventor M.耶勒F.魏斯H.朗F.吉伦卡斯蒂洛
Owner VTESCO TECH GMBH
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