Catalyst heating control method for hybrid electric vehicle

A hybrid electric vehicle, heating control technology, applied in hybrid electric vehicles, motor vehicles, transportation and packaging, etc., can solve the problem of poor emission effect of vehicles

Active Publication Date: 2018-09-04
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different from conventional fuel vehicles, plug-in strong hybrid electric vehicles have frequent engine start and stop conditions during driving, and the temperature of the catalyst is also affected by this, resulting in poor emission effects of the vehicle

Method used

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  • Catalyst heating control method for hybrid electric vehicle
  • Catalyst heating control method for hybrid electric vehicle

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Embodiment Construction

[0029] The invention discloses a catalyst heating control method for a hybrid electric vehicle, which reduces the influence on the temperature of the catalyst during the running of the hybrid electric vehicle.

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0031] Such as figure 1 and figure 2 as shown, figure 1 It is a schematic diagram of the power system structure of the hybrid vehicle catalyst heating control method provided by the present invention; figure 2 It is a control flow chart of the hyb...

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Abstract

The invention provides a catalyst heating control method for a hybrid electric vehicle. In the operational process of the vehicle, a coupling mechanism clutch is controlled to be in an open state whenthe catalyst temperature is low and the catalyst needs to be heated in the condition that an engine needs to be stared in order to ensure the catalytic temperature of the catalyst, so that the engineis disconnected from a follow-up power system, the engine operates individually to only heat the catalyst without accessing subsequent power transmission after the engine is started, and the workingcondition of the vehicle is not influenced by the heating load of the condition that the catalyst is heated by the engine. The heating efficiency of the catalyst is improved, and the influence of excessively low catalyst temperature on vehicle discharge is reduced.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicles, in particular to a catalyst heating control method for hybrid electric vehicles. Background technique [0002] Energy crisis, environmental pollution and greenhouse effect are becoming more and more serious, making new energy vehicles an inevitable trend in the transformation of the automotive industry. Hybrid electric vehicles have the advantages of high efficiency, energy saving, long mileage and strong power, and have attracted extensive attention from scientific research institutions and enterprises. Among them, the single-motor series-parallel plug-in strong hybrid electric vehicle, which can be independently driven by the engine or the motor, is an important branch of new energy vehicles. [0003] Working at the ideal temperature by heating the catalyst is important for the engine to meet increasingly stringent emissions regulations. After the conventional fuel vehicle is...

Claims

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Application Information

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IPC IPC(8): B60W20/16B60W10/06B60W10/08B60W10/10B60W10/02
CPCB60W10/02B60W10/06B60W10/08B60W10/10B60W20/16B60W2510/0604B60W2510/30B60W2710/021B60W2710/06B60W2710/083B60W2710/10Y02T10/62
Inventor 严泽宇刘杰田学勇杨官龙裴鹏宇
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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