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Method for starting an internal combustion engine of a vehicle

A technology for internal combustion engines and hybrid vehicles, applied in the directions of engine starting, engine components, engine control, etc., to achieve the effect of eliminating additional costs

Pending Publication Date: 2021-09-17
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of these methods is that additional structural effort is required to generate the extra energy required to position the pistons of the internal combustion engine

Method used

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  • Method for starting an internal combustion engine of a vehicle
  • Method for starting an internal combustion engine of a vehicle
  • Method for starting an internal combustion engine of a vehicle

Examples

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Embodiment Construction

[0019] figure 1 A first exemplary embodiment of implementing the method according to the invention in the form of a conventional hybrid powertrain is shown. The internal combustion engine 1 is connected via its crankshaft 2 to a hybrid disconnect clutch 3 . The electric motor 4 is connected to the hybrid disconnect clutch 3 . The hybrid disconnect clutch 3 is simultaneously coupled to a transmission 5 which transmits the drive torque transmitted by the drive motors 1 and 4 to the drive wheels 6 .

[0020] figure 2 Another exemplary embodiment of a hybrid powertrain 7 of a vehicle is shown. In this hybrid drive train 7 , instead of a transmission, a first electric motor 4 providing a first drive torque is arranged between the internal combustion engine 1 and the drive wheels 6 . The first electric motor 4 is coupled via a hybrid disconnect clutch 3 to a second electric motor 8 , which in turn is rigidly connected to the internal combustion engine 1 . The crankshaft 2 of t...

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Abstract

The invention relates to a method for starting an internal combustion engine of a vehicle, in which method pistons of the internal combustion engine (1) are positioned by a movement of a crankshaft (2) of the internal combustion engine (1), prior to ignition of the internal combustion engine (1). In a method in which the energy consumption for positioning the pistons of the internal combustion engine is reduced, the crankshaft (2) for positioning the pistons is moved by actuating a coupling (3) integrated into the drive train of the vehicle.

Description

technical field [0001] The invention relates to a method for starting an internal combustion engine of a vehicle, in which method a piston of the internal combustion engine is positioned by moving a crankshaft of the internal combustion engine prior to ignition of the internal combustion engine. Background technique [0002] DE 10 2012 201 102 A1 discloses a method for starting an internal combustion engine with a built-up torque by means of an electric machine, wherein the built-up torque operates in a fluctuating mode over the rotational angle of the crankshaft of the internal combustion engine and the electric machine is rotationally coupled to the crankshaft. The electric machine is used to start when the internal combustion engine is at a standstill, whereby the crankshaft actuating the pistons of the internal combustion engine is set in motion. [0003] When the internal combustion engine is restarted by the electric motor in a hybrid drive train, as is known from the ...

Claims

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Application Information

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IPC IPC(8): F02D41/00F02N19/00
CPCF02D2041/0092F02D41/009F02D41/008F02N2019/007Y02T10/62
Inventor 蒂莫·恩德斯拉夫·曼斯皮尔格
Owner SCHAEFFLER TECH AG & CO KG
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