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Hybrid vehicle and method of limiting torque of an electric machine of a hybrid vehicle under conditions of strong torque demand

A hybrid vehicle and vehicle technology, which is applied to the arrangement of multiple different prime movers of hybrid vehicles, general power plants, and road vehicle drive control systems, etc., can solve problems such as reduction and achieve good results.

Active Publication Date: 2017-06-09
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in situations where strong torque requirements exceed the capabilities of the heat engine, there may be a conflict between the different power harvests performed by the front electric motors, which reduces the remaining power available for delivery to the vehicle's drive wheels

Method used

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  • Hybrid vehicle and method of limiting torque of an electric machine of a hybrid vehicle under conditions of strong torque demand
  • Hybrid vehicle and method of limiting torque of an electric machine of a hybrid vehicle under conditions of strong torque demand
  • Hybrid vehicle and method of limiting torque of an electric machine of a hybrid vehicle under conditions of strong torque demand

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Experimental program
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Embodiment Construction

[0027] figure 1 A hybrid vehicle is shown having a heat engine 2 driving front wheels 6 through a gearbox 4 comprising automatic control of gear changes. The heat engine 2 has an electric starter 8 , which is supplied with current by a low-voltage battery 10 .

[0028] The front motor 12 is coupled to the heat engine 2 through a transmission mechanism in order to assist its operation, while the rear motor 20 is directly coupled to the rear wheels 22 of the vehicle. The two electric machines 12, 20 are connected to an inverter 14 which itself is coupled to a high voltage battery 16 capable of transmitting or receiving high electrical power.

[0029] A current converter DC-DC 18 is inserted between the low-voltage battery 10 and the high-voltage battery 16 in order to use the current voltage achieved by this converter, if necessary, using the energy harvested in the high-voltage battery or from the inverter 14 suitable for charging the low-voltage battery.

[0030] A hybrid v...

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Abstract

A method for limiting the torque drawn by a first electric machine (12) coupled to a traction combustion engine (2) of a hybrid vehicle, said vehicle comprising a second traction electric machine (20) powered by an electrical energy storage device (16), said first machine, designed to supply current to the onboard network (18) of the vehicle, also being able to charge the energy storage device (16), characterised in that, in case of a high torque request made by the driver and exceeding the capabilities of the combustion engine (2), it limits the torque absorbed by the first machine by adjusting the electrical power delivered for said charging, in order to meet said torque request.

Description

technical field [0001] The invention relates to a method for a hybrid vehicle having a traction heat engine and an electric machine coupled to the engine to limit the torque taken by the electric machine, and to a hybrid vehicle implementing the method. Background technique [0002] One type of known hybrid vehicle has a traction heat engine, which may be of gasoline or diesel type, which drives the front wheels, coupled in a permanent manner to a front electric motor which can act on the engine for, inter alia, starting the heat The engine, and acting 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 kinetic energy, and to charge the storage device. [0004] In general, an electrical energy storage device called a ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K6/52B60W20/10B60W10/06B60W10/08B60K6/442B60L11/18F16H3/00
CPCB60K6/442B60K6/52B60L15/20B60L2210/10B60L2240/12B60L2240/421B60L2240/423B60L2260/28B60W10/06B60W10/08B60W20/00B60W2540/10B60W2710/083B60Y2300/91B60W20/19B60L50/16B60L50/40B60L50/61B60L58/20Y02T10/62Y02T10/64Y02T10/70Y02T10/7072Y02T10/72
Inventor C·洛奈Y·米约F·加利诺
Owner PEZHO SITROEN AUTOMOBILS SA
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