A kind of engine control system and automobile

Abstract

The invention provides an engine control system and a car. The engine control system comprises a supercharged engine, an exhaust gas recirculating system connected with the supercharged engine, a secondary air jetting system connected with the supercharged engine and an electronic control unit electrically connected with an exhaust gas recirculating valve in the exhaust gas recirculating system and a secondary air jetting valve in the secondary air jetting system; and the electronic control unit controls the opening and closing states of the exhaust gas recirculating valve and the secondary air jetting valve according to the rotating speed and load of the supercharged engine. According to the engine control system and the car, the supercharged engine is provided with the exhaust gas recirculating system and the secondary air jetting system which are connected with the supercharged engine, the electronic control unit controls the opening and closing states of the exhaust gas recirculating valve and the secondary air jetting valve according to the rotating speed and load of the supercharged engine, the advantage of the EGR technology is sufficiently achieved, the fuel consumption isreduced, and consideration can be given to the fuel economy performance, power performance and discharge performance of the supercharged engine.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an engine control system and an automobile. Background technique [0002] In recent years, with the increasing air pollution, the fuel economy and emission performance of motor vehicles are subject to more and more stringent restrictions. New energy vehicles are limited by many aspects such as production cost, driving mileage and driving safety, so it is difficult to be popularized and used in a short period of time. Technical upgrading for existing traditional fuels is the most realistic and effective way, especially EGR ( Exhaust Gas Recirculation (Exhaust Gas Recirculation) technology, which can effectively improve the fuel consumption level and emission performance of gasoline engines, has attracted more and more attention. [0003] The principle of EGR technology to improve engine performance is to use the characteristics of high specific heat of recirculated exhaust gas to...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of engine control system and automobile, thereby can solve existing EGR technology under the starting working condition, idling working condition and external characteristic working condition, the fuel economy of engine and emission performance are poor; There is a problem of energy waste under load conditions

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