Transmitting state switching control apparatus for hybrid vehicle

A technology for hybrid vehicles and control devices, which can be applied to hybrid vehicles, power devices, control devices, etc.

Active Publication Date: 2007-10-03
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the prior art including Patent Document 1, no appropriate control technology that meets this requirement has been proposed

Method used

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  • Transmitting state switching control apparatus for hybrid vehicle
  • Transmitting state switching control apparatus for hybrid vehicle
  • Transmitting state switching control apparatus for hybrid vehicle

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Embodiment Construction

[0042]Hereinafter, embodiments of the present invention will be described in detail based on examples shown in the drawings.

[0043] Fig. 1 shows a power transmission system of a front-engine / rear-wheel-drive hybrid vehicle, which has a hybrid drive device to which the control device of the present invention can be applied, where 1 is an engine and 2 is driving wheels (rear wheels).

[0044] In the powertrain of the hybrid vehicle shown in FIG. 1 , an automatic transmission 3 is arranged in series rearward of the engine 1 in the front-rear direction, as in a general rear-wheel drive vehicle.

[0045] The motor / generator 5 functions as a motor or as a generator, and is arranged between the engine 1 and the automatic transmission 3 .

[0046] Between the motor / generator 5 and the engine 1, more specifically, between the shaft 4 and the engine crankshaft 1a, a first clutch 6 is inserted, and the engine and the motor / generator 5 can be connected between the engine and the motor / g...

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Abstract

The invention is to provide a device for smoothly performing mode switching accompanied by the start of an engine or the switching of a transmission status due to speed change with high responsiveness. An EV->HEV mode switching command accompanied by the start of an engine is issued at t2 according to the increase of accelerator opening APO, and a 5->4 downshift command is issued at t5. A first clutch is put in a status just before tightening by a real pressure Pc1 at t2, and a revolution speed Nm is increased by increasing motor torque Tm for starting an engine at t3 after the lapse of a set time TM1 since t2. According to the increase of Tm, the slip of a second clutch(H&LR / C) is started, and the tightening of the first clutch is started at t4 when the revolution speed reaches a predetermined value, and the start of the engine is actuated. The torque capacity To of a release element is decreased to the second clutch equivalent value at t5, and the tightening element is put in a status just before tightening, and the release element is completely released, and the tightening element is completely tightened, and 5->4 downshift is completed at t8 in the case of 5->4 speed change end decision based on the release progress of the release element and the tightening progress of the tightening element.

Description

technical field [0001] The present invention relates to a hybrid vehicle that can run using power from a motor / generator in addition to an engine, which has an electric drive (EV) mode and a hybrid drive (HEV) mode that uses only In the hybrid driving mode, the vehicle travels using power from both the engine and the motor / generator. [0002] In particular, it relates to a transmission state switching control technology, which is suitable for starting the engine required when the former EV mode requires engine output and switching to the latter HEV mode, and between switching the motor / generator and driving the wheels. When changing the speed of the transmission path between them, when switching the transmission state of the hybrid vehicle. Background technique [0003] The technique described in Patent Document 1 is known as a hybrid drive device used in the above-mentioned hybrid vehicle. [0004] The structure of the hybrid drive device is as follows: a motor / generator,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/02B60W10/04B60W20/00B60K6/48B60K6/547B60L50/16B60W10/08B60W10/10F16D48/02F16H59/18F16H61/02F16H61/68F16H61/684F16H61/686F16H63/50
CPCB60W30/182B60W20/00B60K6/547B60W10/02B60W10/11Y02T10/48Y02T10/6221B60K6/48Y10T477/26B60L15/2054B60L2240/421B60L2240/423B60L2240/441B60L2240/443B60L2240/507B60L2260/26B60L2270/145Y02T10/72B60L50/16Y02T10/40Y02T10/62Y02T10/64Y02T10/7072B60W20/30B60W2710/027B60W2510/0208B60W2510/0241B60W10/10Y02T10/70
Inventor 谷岛香织
Owner NISSAN MOTOR CO LTD
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