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Method and system for cranking an engine cranking

An engine, engine speed technology, applied in the system field of drivability and fuel economy, to achieve the effect of expanding torque range and improving engine starting

Inactive Publication Date: 2017-08-04
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the electric motor may provide limited use outside of starting the engine

Method used

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  • Method and system for cranking an engine cranking
  • Method and system for cranking an engine cranking
  • Method and system for cranking an engine cranking

Examples

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Embodiment Construction

[0038] The present invention relates to controlling the drive train of a hybrid vehicle. Such as Figure 1-3 As shown, the hybrid vehicle may include an engine and an electric motor. The engine may or may not be run with a driveline integrated starter / generator (eg, an electric motor or motor, which may be referred to simply as DISG) during vehicle operation. The driveline integrated starter / generator is engaged into the driveline on the same axis as the engine crankshaft and turns whenever the torque converter impeller rotates. Also, DISG may not selectively engage or disengage the driveline. Rather, the DISG is an integral part of the drive train. Also, the DISG can be operated with or without the engine running. The mass and inertia of the DISG belongs to the driveline to provide or absorb torque from the driveline when the DISG is not operating.

[0039] The drive train can be Figure 4 method runs. In some examples, the drive train may be based on Figure 5-10 Dri...

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PUM

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Abstract

Methods and systems for cranking an engine are disclosed. In one example, the engine may be started in one of two ways depending on operating conditions. Specifically, the engine can be started via a lower power output electric motor or a higher power output electric motor.

Description

[0001] related application [0002] This application claims priority to US Provisional Patent Application 61 / 643,173, filed May 4, 2012, the entire contents of which are hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to systems and methods for improving the drivability and fuel economy of vehicles. The method is particularly useful for engines selectively connected to an electric motor and a transmission. Background technique [0004] A hybrid vehicle may include an engine and an electric motor to propel the vehicle. In some vehicle designs, the engine may have a significantly higher output capacity than the electric motor due to packaging and weight constraints. The electric motor may be used to start the engine and provide a small amount of torque to start the vehicle in which the engine and electric motor are installed. However, the electric motor may not be able to accelerate the vehicle beyond creep speed wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/02B60W10/06B60W10/08B60W30/18
CPCB60K2006/268B60W10/02B60W10/08B60W20/00B60W20/40
Inventor A·O`C·吉布森S-H·李J·A·多林D·奥欣斯盖D·C·瑞德
Owner FORD GLOBAL TECH LLC
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