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Control method and system for preventing motor from overheating when tmed hybrid vehicle is driven

A technology of a hybrid vehicle and a control method, which is applied to the arrangement of multiple different prime movers of a hybrid vehicle, a general power plant, an electric braking system, etc., can solve the problem of limited motor output, cooling to a preset level or more. It can improve the starting and acceleration performance, prevent the motor from overheating, and ensure the linear braking performance.

Active Publication Date: 2016-05-11
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the vehicle is driven at a sufficiently high speed or driven with a high motor output, the heat emitted by the motor increases, and when the temperature of the motor rises to a preset level or higher, the engine Intention to run, or limit in maintaining driving performance due to limited output due to motor overheating will exist
[0006] That is, when the TMED hybrid vehicle in the related art is driven at a sufficiently high speed or with a considerable load in the EV mode, and when the electric motor is overheated to a preset level or higher, the process of limiting the electric power of the electric motor is performed. operation to protect the electric motor system, the electric motor output is limited so that the engine compensates for the insufficient power
[0007] However, when the engine is suddenly operated regardless of the driving intention due to deterioration of the output of the motor, it may not be possible to obtain the driving force required by the driver until the driving force from the engine is sufficiently transmitted to the wheels. There are restrictions in the operation
Further, the vehicle cannot be driven at the maximum output due to the limitation of the output of the electric motor, that is, until the electric motor cools down to a preset level or lower

Method used

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  • Control method and system for preventing motor from overheating when tmed hybrid vehicle is driven
  • Control method and system for preventing motor from overheating when tmed hybrid vehicle is driven
  • Control method and system for preventing motor from overheating when tmed hybrid vehicle is driven

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Embodiment Construction

[0020] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein includes motor vehicles in general, including, for example, sport utility vehicles (SUVs), buses, trucks, commercial vehicles of all kinds Passenger vehicles, including various boats and boats, water vehicles, and aircraft, etc., and including hybrid vehicles, electric vehicles, internal combustion vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (eg, fuels derived from sources other than petroleum). A hybrid vehicle as used herein refers to a vehicle that has more than two sources of power, such as gasoline-powered and electric-powered hybrids.

[0021] Although the present invention may be described as using a plurality of units to execute the exemplary procedure, it should be understood that the exemplary procedure may also be executed by one or more modules. Furthermore, it should be understood that a "control...

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Abstract

A control method and system are provided for preventing a motor from overheating when a TMED hybrid vehicle is driven to thus improve driving performance by operating an engine before limiting motor output based on a driving state while the vehicle is driven in an EV mode, and the current temperature of the motor. The method includes monitoring a motor temperature of a hybrid vehicle and operating an engine when the current motor temperature of the motor is a first motor temperature or greater when the vehicle is driven in an EV mode. In addition, motor output is limited when the current motor temperature is equal to or greater than a third motor temperature, which is greater than the first motor temperature, after the engine is operated.

Description

technical field [0001] The present invention relates to a control system and method for preventing an electric motor from overheating when a clutch-mounted electric device (TMED: transmission mounted electric device) hybrid vehicle is driven. More particularly, it relates to a control method and system for preventing engine performance degradation due to engine overheating when a TMED hybrid vehicle is driven in an EV (electric vehicle) mode. Background technique [0002] A hybrid vehicle is an environmentally friendly vehicle that uses an engine and an electric motor as power sources. In general, a hybrid vehicle is driven by an electric motor using battery power until it reaches a preset speed after starting, and it can be driven by appropriately combining electric motor power and engine power based on driving intention and battery status. [0003] A Clutch Electric Device Installed (TMED) hybrid vehicle is a hybrid vehicle employing the TMED, and an electric motor is ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W10/06B60W10/08
CPCB60W10/06B60W10/08B60W20/00B60W2510/087B60L3/0061B60L7/10B60L15/20B60L15/2054B60L2240/36B60L2240/423B60L2240/425B60L2240/443B60L2240/485B60L2240/507B60L2240/662B60L2260/26B60W10/02B60W30/1843B60W2510/107B60W2710/0666B60W2710/083B60W20/15B60W2555/20Y02T10/62Y02T10/64Y02T10/72Y02T90/16Y10S903/93B60K6/22B60K6/26B60W10/04
Inventor 赵泰焕吴钟范韩东燃朴成翼
Owner HYUNDAI MOTOR CO LTD
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