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Double-planet-row multimode hybrid power automobile power transmission system

A technology for hybrid vehicles and power transmission systems, which is applied in hybrid vehicles, motor vehicles, power units, etc., can solve the problems of reducing the fuel economy of the whole vehicle, reducing the transmission efficiency of the system, and reducing the transmission efficiency, so as to improve the fuel economy. performance, improve fuel economy, and prevent overturning

Inactive Publication Date: 2018-08-14
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing hybrid powertrain system based on the power split power coupling mechanism, in the E-CVT hybrid drive mode, if only the input split mode is used, it is only suitable for low-speed driving conditions, medium-high speed or high-speed driving conditions The transmission efficiency of the system decreases; if only the compound power split mode is used, it is suitable for medium and high speed driving conditions, and the system transmission efficiency will also decrease under low speed or high speed conditions; the system adopts the dual mode of input and compound power split, It has high transmission efficiency under low-speed and medium-high-speed conditions, but the efficiency will still decrease under high-speed conditions, which will reduce the fuel economy of the whole vehicle

Method used

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  • Double-planet-row multimode hybrid power automobile power transmission system
  • Double-planet-row multimode hybrid power automobile power transmission system

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Embodiment Construction

[0037] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] Such as figure 1 As shown, a power transmission system for a dual-planetary multi-mode hybrid electric vehicle provided by the present invention includes: a brake 8, a power source, a ring gear, a first planetary-row driving device, a second planetary-row driving device and a controller, etc. The power source wherein includes the first power source 1, the second power source 9 and the third power source 13; the ring gear includes the first ring gear 5 and the second ring gear 17, and the first ring gear...

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Abstract

The invention discloses a double-planet-row multimode hybrid power automobile power transmission system. One end of a first planet carrier is in clutch connection with a second gear ring through a first clutch while the other end of the same is in clutch connection with a first gear ring through a second clutch, and a first sun gear is connected with a first power source through a first transmission shaft; one end of a second planet carrier is connected with a brake while the other end of the same is in clutch connection with the first gear ring through a third clutch, a second sun gear is connected with a second power source through a second transmission shaft, and the second gear ring is connected with a power output shaft through a speed reducing device; a controller is electrically connected with the first clutch, the second clutch, the third clutch, the brake and each power source. Three power division modes like input, combination and output respectively adapted to low speed, medium speed and high speed under E-CVT combination drive are realized through only two planet row driving devices, and running efficiency of the transmission system and fuel economy of a whole automobile can be improved in the whole running speed interval.

Description

technical field [0001] The invention relates to the field of automobile power transmission, in particular to a power transmission system of a double-planet row multi-mode hybrid electric vehicle. Background technique [0002] With the continuous aggravation of the energy crisis and the deterioration of the ecological environment, energy conservation and environmental protection have become two major themes that the international community has focused on. Governments of various countries have introduced relevant policies to encourage and promote the research and development of new energy vehicles. Among them, fuel cell vehicles and pure electric vehicles are difficult to popularize in the short term due to technical reasons. Therefore, as a transitional product, hybrid electric vehicles are getting more and more attention. As the most effective energy-saving vehicle solution at present, the powertrain system of hybrid electric vehicles includes series, parallel, series-para...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/365B60K6/442B60K6/50
CPCB60K6/365B60K6/442B60K6/50Y02T10/62
Inventor 胡明辉苏炎召苏岭秦大同
Owner CHONGQING UNIV
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