Three-element catalyst preheating device of hybrid vehicle, method and hybrid vehicle

Abstract

The invention relates to a three-element catalyst preheating device of a hybrid vehicle, a method thereof and the hybrid vehicle. The device comprises a temperature sensor, a controller and a heater. The temperature sensor is used for detecting the temperature of the three-element catalyst and outputting temperature signals to the controller; the controller is used for controlling the working state of the heater; the heater is used for heating the three-element catalyst; the device also comprises an electricity quality collecting unit for collecting remained electricity quality of a storage battery in the hybrid vehicle and outputting remained electricity quality signals to the controller; and the controller is used for confirming the remained electricity quality of the storage battery andthe temperature of the three-element catalyst according to the remained electricity quality signals and the temperature signals, comparing the remained electricity quality with the set reference electricity quality of the storage battery, comparing the temperature of the three-element catalyst with the set optimum working temperature of the three-element catalyst, and controlling the working state of the heater according to the comparison result. The device can effectively reduce the discharge of harmful gas in tail gas so as to protect the environment.

Description

technical field [0001] The present invention relates to a preheating device and method for a three-way catalytic converter and a hybrid electric vehicle, more particularly, to a preheating device and a preheating method for a three-way catalytic converter of a hybrid electric vehicle and a preheating method with the preheating method. device for hybrid vehicles. Background technique [0002] In order to reduce the content of harmful gases emitted by fuel vehicle tail gas with gasoline and diesel oil as the main fuel, three-way catalytic converters are mostly installed on automobile exhaust pipes in the automobile industry at present. The three-way catalytic converter can effectively reduce the content of harmful gases in automobile exhaust. However, the three-way catalytic converter can only work effectively at the optimum operating temperature of 250°C to 300°C. Therefore, when the car engine is cold started, the temperature of the three-way catalytic converter is very low...

AI Technical Summary

Problems solved by technology

And this starting mode of the engine is different from the cold start in the prior art, as when the above-mentioned three-way catalytic converter preheating device suitable for the cold start of pure fuel vehicles is applied to this hybrid vehicle, in this starting situation The preheating device is not working, so the three-way catalytic converter cannot reach the optimum working temperature when the engine is started, so that the exhaust gas discharged when the engine is started can hardly be purified, and most of the harmful gases are directly discharged into the atmosphere , causing environmental pollution

Based on this, the above-mentioned three-way catalytic converter preheating device suitable for pure fuel vehicles is not suitable for hybrid vehicles

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