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Method for adapting operating strategy for electric machine of hybrid vehicle

A technology for hybrid vehicles and operation strategies, which is applied in the arrangement of multiple different prime movers of hybrid vehicles and general power plants, and the starting of engines to achieve the effect of improving service life.

Pending Publication Date: 2021-06-18
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If the existing electric machine is also a traction machine, the required starting torque must be maintained and therefore cannot be used for purely electric driving

Method used

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  • Method for adapting operating strategy for electric machine of hybrid vehicle
  • Method for adapting operating strategy for electric machine of hybrid vehicle

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Embodiment Construction

[0022] exist figure 1 A schematic illustration of a hybrid vehicle 1 with an internal combustion engine 10 and an electric machine 15 is shown in . In this case, the hybrid drive train 2 of the hybrid vehicle 1 consists of an internal combustion engine 10 , preferably a diesel engine, an Otto engine, a natural gas-operated engine or a flex-fuel engine, and an electric machine 15 . In this case, the electric machine 15 can preferably be designed as an electric machine operated as a motor, which can be operated both as a motor and as a generator. For example, the electric machine 15 is designed as a belt-starter-generator (Riemen-Starter-Generator (RSG)).

[0023] A known p2 motor arrangement is exemplarily described here. A further component of the hybrid drivetrain 2 is the first clutch 16 . The first clutch 16 is connected on the one hand to the crankshaft 17 of the internal combustion engine 10 and on the other hand to the electric machine 15 , so that the connection can ...

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Abstract

The invention relates to a method for adapting an operating strategy for an electric machine (15) of a hybrid vehicle (1), the hybrid vehicle (1) having an electric machine (15) for providing a drive power and an internal combustion engine (10), wherein the electric machine (15) can supply the internal combustion engine (10) with a torque for starting the internal combustion engine (10), wherein the deceleration stop position of the cylinder (22) is determined in particular as a function of the crankshaft angle after an engine stop of the internal combustion engine (10) has occurred, wherein a minimum torque () for restarting the internal combustion engine (10) is determined as a function of a deceleration stop position of the cylinder (22), wherein an operating strategy for the electric machine (15) maintains the acquired torque () for restarting the internal combustion engine (1).

Description

technical field [0001] The invention relates to a method for adapting an operating strategy for an electric machine of a hybrid vehicle. Background technique [0002] Hybrid vehicles are known which are able to carry out a request to start the internal combustion engine by means of an existing electric machine. To this end, the electric machine supplies a torque to the internal combustion engine in order to accelerate the internal combustion engine. The supplied torque must be chosen highly so that reliable starting can be ensured. [0003] If the existing electric machine is also a traction machine, the required starting torque must be maintained and therefore cannot be used for purely electric driving. Contents of the invention [0004] In a first aspect, the invention relates to a method for adapting an operating strategy for an electric machine of a hybrid vehicle having an electric machine and an internal combustion engine for providing a drive power; wherein said ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/08
CPCF02N11/0829B60K6/48B60K2006/4825B60W10/30F02D41/009F02D41/062F02N11/04F02N19/00F02N19/005F02N99/006F02N2200/021F02N2300/104Y02T10/62
Inventor J·罗尔曼W·伯恩特
Owner ROBERT BOSCH GMBH
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