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Powertrain and method for fast start of an internal combustion engine in a hybrid electric vehicle

A technology for hybrid electric vehicles and powertrains, which is applied in the field of powertrains and can solve problems such as response delays

Inactive Publication Date: 2013-05-22
VOLVO CAR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at some point, when the power in the battery is low or if the driver demands more power than an electric vehicle's traction motor can produce, the internal combustion engine has to kick in.
In particular, if the driver wants to accelerate the vehicle at an already high rpm on the powertrain, there will be a noticeable delay in response if the internal combustion engine has to first have sufficient lubricating oil pressure
So the problem is to get the power as fast as possible from the time the engine is started without damaging the engine

Method used

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  • Powertrain and method for fast start of an internal combustion engine in a hybrid electric vehicle

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Embodiment Construction

[0014] The present invention will be explained below with reference to the accompanying drawings. The examples are chosen to facilitate the reading and understanding of the invention.

[0015] figure 1 An internal combustion engine 1 of a plug-in hybrid electric vehicle is shown, an engine lube oil pump 2 in fluid communication with a lube oil flow circuit for the internal combustion engine, an electric oil pump drive motor 3 drivingly connected to the lube oil pump 2, and a powertrain control module 4 . The lubricating oil flow circuit also includes a lubricating oil flow accumulator 5 , and the lubricating oil pump 2 has an oil flow inlet connected to the lubricating oil flow accumulator 5 .

[0016] When the plug-in hybrid electric vehicle is powered on, the electric oil pump driving motor 3 is activated by electric power supplied from the battery. Therefore, since the electric oil pump drive motor 3 is drivingly connected to the lubricating oil pump 2, the oil pressure ...

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Abstract

A plug-in hybrid electric vehicle powertrain comprises an internal combustion engine (1) and an electric vehicle traction motor, an engine lubrication oil pump (2) in fluid communication with a lubrication oil flow circuit for the internal combustion engine, an electric oil pump drive motor (3) drivingly connected to the lubrication oil pump (2), and a powertrain control module (4). The powertrain control module (4) is configured to start the electric oil pump drive motor (3) immediately upon the initial start of the vehicle.

Description

technical field [0001] The present invention relates to a plug-in hybrid electric vehicle powertrain comprising an internal combustion engine and an electric vehicle traction motor, an engine lube oil pump in fluid communication with a lube oil flow circuit for the internal combustion engine, an electric oil pump drive motor drivingly connected to the lube oil pump , and the powertrain control module. The invention also relates to a method of establishing lubricating oil pressure for an internal combustion engine in a powertrain of a plug-in hybrid electric vehicle, said powertrain comprising an internal combustion engine and an electric vehicle traction electric motor in fluid communication with a lubricating oil flow circuit for the internal combustion engine An engine lube oil pump, an electric oil pump drive motor drivingly coupled to the lube oil pump, and a powertrain control module. Background technique [0002] When running an internal combustion engine, the lubrica...

Claims

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Application Information

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IPC IPC(8): B60K6/20B60W20/00B60W10/06B60W10/08
CPCF01M2001/0215F01M5/02F01M1/02F01M1/16F02N2200/025F16H57/0439B60W10/30B60W30/18054Y10S903/903B60K2025/005F02N19/001F02D29/04Y02T10/62
Inventor D·佩尔松R·博登T·伊瓦尔松P·赫姆奎斯特L·贝里格伦I·奥克索恩P·凯尔斯特德
Owner VOLVO CAR CORP
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