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Method for starting an internal combustion engine in a parallel hybrid drive train

A technology of hybrid transmission and internal combustion engine, which is applied to the layout of multiple prime movers of the general power plant, the starting of the engine, and hybrid vehicles, etc., which can solve problems such as interruption of traction force and achieve the effect of reducing interruption of traction force

Inactive Publication Date: 2007-08-22
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In some cases, this disclosed method produces a small but inherently undesirable interruption of traction on the drive train

Method used

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  • Method for starting an internal combustion engine in a parallel hybrid drive train
  • Method for starting an internal combustion engine in a parallel hybrid drive train
  • Method for starting an internal combustion engine in a parallel hybrid drive train

Examples

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Embodiment Construction

[0027] The crosses are shown in a table below the respective figures, which represent the respective closing of the shifting elements described later, ie clutches and brakes (middle row), while the lower row represents the opening of the shifting elements. The actual torque flow is represented in each case by a thick solid line in the figures.

[0028] The automatically shiftable vehicle transmission 1 is a parallel hybrid drive train part of the vehicle which is not shown in detail. Such a transmission 1 includes a drive shaft 2 , the input of which is connected, for example via a torsional vibration damper, to a drive train, not shown, of an internal combustion engine.

[0029] On the output side of the transmission 1 there is a driven shaft 3 which can be drive-coupled to at least one vehicle axle. Between the so-called two shafts 2 and 3 there is a transmission 4, which consists of a first transmission stage (first planetary gear set 5) and a second transmission stage wit...

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PUM

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Abstract

The invention relates to a method for starting an internal combustion engine in a parallel hybrid drive train of a motor vehicle. In addition to the internal combustion engine, said drive train comprises an automatic transmission (1) which is provided with a drive shaft (2) that can be connected to the internal combustion engine, at least one output shaft (3) that can be connected to at least one driving axle of the motor vehicle, a mechanical transmission (4) encompassing a first and a second planetary gear set (5, 6), several clutches and brakes, and an electric machine (14) that is used as a starter / generator and / or for continuously adjusting the transmission and / or electrically driving the motor vehicle. The electric machine (14) can be connected to a first and / or a second shaft of the first planetary gear set by means of two of the clutches in such a way that the internal combustion engine can be started by actuating one of the two clutches when the vehicle is driven exclusively in the electric mode and the other clutch is closed, the internal combustion engine being started by closing the clutch (K4) which can be connected directly to the drive shaft (2) by closing the same.

Description

technical field [0001] The invention relates to a method for starting an internal combustion engine in a parallel hybrid drivetrain according to the preamble of claim 1 . Background technique [0002] DE 101 40 424 A1 according to the classification discloses a method for starting an internal combustion engine in a parallel hybrid drive train of a motor vehicle. In addition to the internal combustion engine, the drive train also includes an automatically switchable transmission having a drive shaft connectable to the internal combustion engine and a driven shaft coupled to at least one transmission shaft of the vehicle and a mechanical transmission having a first and a second Planetary gear sets, multiple clutches, multiple brakes and electric motors. [0003] The electric machine acts as a starter / generator and / or can be used for a continuously variable transmission and / or for electric driving of the vehicle. For this purpose, the electric machine can be connected to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/04F02N11/00B60K6/365B60K6/38B60K6/40B60K6/48B60W10/10
CPCF16H2200/2023B60W10/115B60K6/48B60K6/365B60W10/02B60K6/40F02N15/02F16H3/725Y02T10/6221F02N11/04B60W20/00B60K6/38Y02T10/62B60K2006/268B60W10/08B60W10/06B60W20/40
Inventor 奥利弗·斯特芬阿克塞尔·海特曼
Owner ZF FRIEDRICHSHAFEN AG