Method for starting internal combustion engine of hybrid power device and control unit for starting the internal combustion engine

A technology of hybrid power and control unit, applied in the field of the crankshaft of the engine, which can rely on the clutch and the motor, and can solve the problems of unable to ignite and reliably start the internal combustion engine, etc.

Inactive Publication Date: 2012-11-07
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The disadvantage here is that the cylinder in which the first ignition is performed cannot be fired during the forward movement, because only the combustion gases of the first ignition are in the combustion chamber
Since the piston has to move beyond this ignition point without corresponding ignition, the internal combustion engine cannot be reliably started in this way

Method used

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  • Method for starting internal combustion engine of hybrid power device and control unit for starting the internal combustion engine
  • Method for starting internal combustion engine of hybrid power device and control unit for starting the internal combustion engine
  • Method for starting internal combustion engine of hybrid power device and control unit for starting the internal combustion engine

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Embodiment Construction

[0037] figure 1 A motor vehicle is shown schematically in , and is generally designated with the reference numeral 10 . The motor vehicle 10 has a powertrain 12 which in the present case contains an electric machine 14 and an internal combustion engine 16 for providing drive power. Electric machine 14 and internal combustion engine 16 form a parallel hybrid in the present case. The powertrain 12 is used to drive driven wheels 18L, 18R of the vehicle 10 .

[0038] The internal combustion engine 16 is connected or connectable to the electric machine 14 via a crankshaft 20 , wherein the internal combustion engine 16 and the electric machine 14 provide a torque t at an output shaft 22 , which rotates at an adjustable rotational speed. The output shaft 22 is connected or connectable to a transmission unit 24 in order to transmit the torque t to the driven wheels 18R, 18L. Crankshaft 20 and output shaft 22 now each have a clutch 26 , 28 in order to connect internal combustion eng...

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Abstract

The present invention relates to a method for starting an internal combustion engine of a hybrid power device and a control unit for starting the internal combustion engine. In the method for starting the internal combustion engine (16) of the hybrid power device, especially the internal combustion engine (16) with a direct injection device, the hybrid power device comprises the internal combustion engine (16) and an engine (14) to provide a drive power, wherein the internal combustion engine (16) is started by directly starting the injection of fuel into at least one cylinder (40,42) of a piston cylinder mechanism of the internal combustion engine (16) and ignition of a fuel-oxygen mixture generated in the cylinder (40,42), a crankshaft (20) of the internal combustion engine (16) is connected with the engine (14) by a clutch (26), and the closure of the clutch (26) is directly started to support the engine (14).

Description

technical field [0001] The invention relates to a method for starting an internal combustion engine of a hybrid drive, in particular an internal combustion engine with direct injection, wherein the hybrid drive has an internal combustion engine and an electric machine for providing drive power, wherein the internal combustion engine is started by injecting fuel into the internal combustion engine In at least one cylinder of the piston-cylinder mechanism and the ignition of the fuel-oxygen mixture thus generated in the cylinder is activated, wherein the crankshaft of the internal combustion engine can be connected to the electric machine by means of a clutch. [0002] Furthermore, the invention relates to a control unit for starting an internal combustion engine of a hybrid drive having an internal combustion engine and an electric machine for providing drive power, wherein the control unit is designed to carry out the method described above. [0003] Finally, the invention rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00F02N11/00F02N9/02
CPCF02N15/02F02N99/002F02N2300/2002B60W10/06F02N11/04B60K2006/4825Y02T10/6286Y02T10/6252B60W20/40B60Y2300/48B60K6/48B60W10/08Y02T10/6221B60W10/02Y02T10/62
Inventor E.卡尔瓦K.赖R.魏斯A.施密特C.格斯特劳尔B.希勒U.西贝尔M.迪特里希
Owner ROBERT BOSCH GMBH
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