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Method for managing a transient phase of the starting of a heat engine by an electric motor

A technology for starting a combustion engine, which is applied to the starting of the engine, the starting of the motor for the engine, the arrangement of multiple different prime movers of the general power plant, etc., and can solve problems such as complex control

Active Publication Date: 2019-07-26
VTESCO TECH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In this context, as indicated above, control over the transient phase in which the combustion engine takes over from the electric machine to drive the drive shaft is somewhat complex

Method used

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  • Method for managing a transient phase of the starting of a heat engine by an electric motor
  • Method for managing a transient phase of the starting of a heat engine by an electric motor
  • Method for managing a transient phase of the starting of a heat engine by an electric motor

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Embodiment Construction

[0025] The invention is mainly proposed with respect to application in the context of motor vehicle hybrid, combustion and electric drive systems. However, the invention is also directed to other applications, in particular any implementation in any hybrid, combustion and electric drive system of any type of land or non-land vehicle, as long as the electric machine is connected to the drive shaft upstream of the clutch and preferably parallel to the crankshaft .

[0026] refer to figure 1 , which schematically depicts a hybrid drive system, the method according to the invention relates to the starting of such a hybrid drive system. As previously indicated, the electric machine BSG of the hybrid drive system (the reference BSG corresponds to the abbreviation BSG, which stands for Belt Drive Starter Generator) is connected to the drive shaft upstream of the clutch C (and of course differential TX) X and parallel to the crankshaft V.

[0027] figure 2 A simplified diagram sh...

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Abstract

The present invention relates to a method for managing the starting of a heat engine of a hybrid drive system, comprising a heat engine and an electric motor (BSG), as well as a crankshaft (X), the electric motor (BSG) producing a torque for starting the heat engine and driving the crankshaft (X) at least during an initial starting phase. The method has a transient starting phase during which theheat engine drives the crankshaft (X) and at the end of which the electric motor (BSG) is stopped. The electric motor (BSG) is regulated, during the initial phase (ELEC) and during the transient phase, with a first engine-speed setting (N_SP_IS). The transient phase starts when the crankshaft (X) reaches the first engine-speed setting (N_SP_IS) in a stabilised fashion. The control of the torque produced by the electric motor (BSG) during said transient starting phase is configured so that the electric motor (BSG) is stopped as soon as said control determines that the torque produced by the electric motor (BSG) is tending towards zero torque.

Description

technical field [0001] The invention relates to hybrid, combustion and electric drive systems, especially for motor vehicles. Background technique [0002] More specifically, the invention relates to a method for controlling the transient phase in the start-up of a combustion engine in a vehicle hybrid drive system when the combustion engine takes over from the electric machine. [0003] In a known manner, so-called hybrid vehicles comprise a hybrid drive system with a combustion (thermal) engine and an electric machine. In this context, it is well known to those skilled in the art that the control of the transient phase after start-up of such a hybrid drive system when the combustion engine takes over from the electric machine to drive the drive shaft is somewhat tricky. [0004] There are two techniques conventionally used to start combustion engines. A first known technique, more generally, uses a "traditional" starter: in this case a drive shaft is driven via a gear vi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/48B60W10/06B60W10/08B60W20/40F02N11/00
CPCB60W10/06B60W10/08B60W2510/083B60W2710/0644B60W2710/065B60W2710/081F02N2200/022F02N2200/041F02N2200/042F02N2300/102B60W20/40B60K6/387B60K6/485B60W10/02B60K2006/268F02N11/04F02N11/0848F02N2300/104Y02T10/62B60K6/26B60K6/38B60K6/46B60Y2200/92B60Y2300/43F02D41/0097F02D41/062F02D41/3005F02D2200/101
Inventor D.韦迪耶Y.吉约J.拉雪兹
Owner VTESCO TECH GMBH
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