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Internal combustion engine starting method for hybrid power plant and control unit for starting internal combustion engine

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

Inactive Publication Date: 2017-04-12
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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  • Internal combustion engine starting method for hybrid power plant and control unit for starting internal combustion engine
  • Internal combustion engine starting method for hybrid power plant and control unit for starting internal combustion engine
  • Internal combustion engine starting method for hybrid power plant and control unit for starting 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 method involves providing driving power to internal combustion engine (16) using electric machine (14). The fuel is injected into cylinder of piston-cylinder arrangement of internal combustion engine. The fuel-oxygen mixture in the cylinder is ignited. A crankshaft (20) of internal combustion engine is connected with electrical machine through clutch (26). The internal combustion engine is started directly by engaging the clutch with electric machine. Independent claims are included for the following: (1) control unit for starting internal combustion engine; and (2) motor vehicle drive train.

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 Patents(China)
IPC IPC(8): B60W20/40B60W10/02B60W10/06B60W10/08B60K6/48F02N11/00F02N9/02
CPCB60K6/48B60K2006/4825B60W10/02B60W10/06B60W10/08B60W20/40B60Y2300/48F02N11/04F02N15/02F02N99/002F02N2300/2002Y02T10/62
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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