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Method of limiting torque of an electric machine of a hybrid vehicle with a speed control system

A technology for hybrid vehicles, automatic control systems, applied in hybrid vehicles, efficient vehicle charging, control/regulation systems, etc., to achieve high torque levels and comfortable acceleration

Active Publication Date: 2017-05-10
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] To this end, the invention proposes a method for limiting the torque of a hybrid vehicle, said torque being taken up by a first electric machine coupled to a drive mechanism (4) that drives the vehicle through transmissions (4) comprising different speed ratios A traction heat engine with a first electrical machine arranged to supply current to a low voltage battery of an on-board network of a vehicle including an automatic control system for its speed to regulate or limit speed , characterized in that the method of limiting torque reduces or sheds energy storage in the event that the heat engine is unable to deliver an acceleration of the vehicle sufficient to correspond to the level of comfort in response to the requirements of the automatic speed control system based on the same speed ratio of the transmission The load of the low-voltage battery of the device or the vehicle network

Method used

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  • Method of limiting torque of an electric machine of a hybrid vehicle with a speed control system
  • Method of limiting torque of an electric machine of a hybrid vehicle with a speed control system
  • Method of limiting torque of an electric machine of a hybrid vehicle with a speed control system

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Embodiment Construction

[0024] figure 1 A hybrid vehicle is shown having a heat engine 2 driving front wheels 6 through a gearbox 4 including automatic control of gear changes. The heat engine 2 has an electric starter 8 supplied with current by a low-voltage battery 10 .

[0025] In variants, the heat engine 2 may drive the front wheels 6 through other types of transmission, such as an automatic transmission "BVA", a continuously variable transmission "CVT" or a dual clutch transmission.

[0026] The front electric motor 12 is directly coupled to the heat engine 2 to assist its operation, while the rear electric motor 20 may be coupled to the rear wheels 22 of the vehicle through a differential lock arrangement. The two electric machines 12, 20 are connected to an inverter 14, which is itself coupled to a high-voltage battery 16, which is capable of receiving or transmitting high electrical power.

[0027] A current converter DC-DC 18 is inserted between the low-voltage battery 10 and the high-vol...

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PUM

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Abstract

A method for a hybrid vehicle for limiting the torque drawn by a first electric machine (12) linked to a combustion engine (2) linked to a transmission (4), said first machine being designed to supply current to a battery (10) of the onboard network of the vehicle, and an energy storage device (16) which delivers said energy to a second traction electric machine (20), the vehicle comprising an automatic system for controlling the speed of same, characterised in that, in case the combustion engine (2) is not able, on a given ratio of the transmission (4), in response to a request from the automatic speed control system, to deliver the preferred acceleration, it sheds the load of the energy storage device (16) or of the battery (10) of the onboard network before using the second electric machine, or changing the ratio, if this load shedding alone is not sufficient to provide the preferred acceleration.

Description

technical field [0001] The invention relates to a hybrid vehicle having a traction heat engine and an electric machine coupled to the heat engine, the electric machine capable of charging an electrical energy storage device, a method of limiting the torque driving the electric machine, and the implementation of the method of hybrid vehicles. Background technique [0002] One class of known hybrid vehicles has a traction heat engine, which may be of gasoline or diesel type, driving the front wheels through a transmission comprising different ratios, coupled in a permanent manner to a front electric motor which can act It acts on the engine to start the heat engine, and on the generator to charge the battery and electrical energy storage of the on-board network. [0003] The energy storage device supplies power to a second rear electric motor that drives the rear wheels, which can also act on the engine to transmit torque at these wheels, or on a generator to recover vehicle ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K6/52B60K31/00B60W10/08B60W10/11B60W10/26B60W30/188B60W20/30
CPCB60K6/52B60K31/00B60W10/08B60W10/11B60W10/26B60W20/30B60W30/188B60W2710/083B60W2710/105B60W2710/248B60W20/19Y02T10/62Y02T10/92
Inventor Y·米约T·赫克斯韦勒
Owner PEZHO SITROEN AUTOMOBILS SA
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