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Hybrid vehicle control system

A hybrid vehicle and control system technology, applied in the field of hybrid vehicle control systems, can solve the problems of engine speed increase, etc., to achieve the effects of reducing power loss, avoiding durability degradation, and avoiding braking torque

Inactive Publication Date: 2020-06-09
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a hybrid vehicle is running with drive torque output from the engine and the driver operates the shift lever to select neutral, the engine speed may increase due to the delay in reducing engine power in response to shifting to neutral

Method used

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  • Hybrid vehicle control system
  • Hybrid vehicle control system
  • Hybrid vehicle control system

Examples

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Embodiment Construction

[0039] figure 1 is a schematic diagram showing an example of a hybrid vehicle to which the present invention can be applied. figure 1 The shown hybrid vehicle 1 can convert a part of the power output by the engine (ENG) 2 into electric power while transmitting the remaining power to the driving wheels 3, and can output the second motor (MG2) 4 which will be described later The power is transmitted to the drive wheel (OUT)3. The hybrid vehicle 1 is a so-called series-parallel hybrid vehicle, and is equipped with a power split device 5 that splits the torque of the engine 2 .

[0040] The power distributing device 5 is a differential mechanism (PL1), such as a single-pinion planetary gear mechanism or a double-pinion planetary gear mechanism, which is configured so that three rotating elements rotate differentially, and the engine 2 is coupled to the One of the elements rotates the first element 6 so as to allow torque transmission. The engine 2 may be any type of conventiona...

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PUM

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Abstract

Provided is a hybrid vehicle control system, the hybrid vehicle control system including: a differential mechanism; an engine; a first motor; a driving wheel; a second motor; an engaging mechanism; aselector that selects neutral in which torque transmission from the engine to the driving wheel through the differential mechanism is interrupted; and an electronic control unit. The electronic control unit is configured to set either mechanical neutral or electrical neutral when the neutral is selected, and to set the mechanical neutral when the neutral is selected while the speed of the engine is equal to or lower than a predetermined speed.

Description

technical field [0001] The present invention relates to a hybrid vehicle control system equipped with an engine and a motor as driving power sources. Background technique [0002] Japanese Patent No. 6359875 describes a hybrid vehicle control system including: a differential mechanism having a rotating element to which an engine, a first motor, and an output shaft are respectively coupled; a stepped transmission mechanism, An output shaft of the differential mechanism is coupled to the stepped transmission mechanism; and a second motor is coupled to the output shaft of the differential mechanism to allow torque transfer. When the hybrid vehicle travels with driving torque output from the engine and the driver operates a shift lever to select neutral, the engine speed may increase due to a delay in reducing engine power in response to shifting to neutral. In order to avoid such a situation, the above-mentioned hybrid vehicle control system is configured to perform interrupti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/08B60W10/11B60W20/40B60W30/19
CPCB60W10/06B60W10/08B60W10/11B60W20/40B60W30/19B60W2520/28B60W2510/0638B60W2520/10B60W10/02B60W20/15B60W2510/0241B60W2510/101B60W2540/16B60W2710/021B60W2710/081B60K6/387B60K6/445B60K6/365F16H2200/2005F16H2200/2007F16H2200/2033F16H2200/2035Y02T10/62B60W10/12B60W10/105
Inventor 远藤隆人今村达也江渊弘章
Owner TOYOTA JIDOSHA KK