Control system of automotive diesel and gasoline dual-fuel engine and control method thereof

Abstract

The invention discloses a control system of a diesel and gasoline dual-fuel engine and a control method thereof. The control system comprises an engine control unit, a signal collection unit, a high pressure diesel supply pump and a gasoline supply pump, wherein the engine control unit collects signals from the signal collection unit, sends control signals to the high pressure diesel supply pump and the gasoline supply pump and simultaneously sends the control signals to an electronic control diesel injector and an electronic control gasoline injector. The control method of the control system comprises the step that gasoline in a cylinder is ignited at multiple points through compression ignition and the injection of diesel at multiple points. According to the control method, the gasoline is ignited at multiple points through the compression ignition of the diesel, so not only can the effective heat efficiency of the gasoline be improved, but also the emission of pollutants can be reduced. The control system and the control method are suitable for various vehicles utilizing the diesel to ignite the gasoline.

Description

technical field [0001] The invention belongs to the field of automobiles, and relates to an automobile engine control system, in particular to a diesel and gasoline dual-fuel engine control system and a control method thereof. Background technique [0002] At present, as more and more private cars enter people's lives, the consumption of petroleum energy is becoming more and more serious. Therefore, how to maximize the thermal efficiency of fuel and improve fuel economy to slow down excessive consumption of energy and prolong the global use of petroleum energy The number of years has become the most concerned issue in various countries. At the same time, with the increase of automobiles, the exhaust gas emitted by automobiles has also become the source of major pollutants in the environment, which has brought a heavy burden to the environment. How to control the adverse impact of automobile exhaust on the environment has become the most important issue in all countries in th...

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Problems solved by technology

[0003] In order to solve the above problems, a dual-fuel engine was born, which uses ethanol, natural gas or methanol to increase the combustion rate of fuel at the same time as gasoline. However, in order to avoid knocking in gasoline engines, the compression ratio cannot be set too high. The combustion rate of gasoline is still very low. When using natural gas and gasoline dual-fuel engines at the same time, it is necessary to install large gas tanks, pressure reducing valves, pressure gauges and other devices. Moreover, there are few natural gas filling stations in the domestic market. Not conducive to its modified energy filling

The diesel engine adopts a compression-ignition internal compressor, the compression ratio can be designed to be high within a controllable range, and its thermal efficiency is also high, but the exhaust gas of the diesel engine such as polymethyl methacrylate and nitrogen is relatively high, which is harmful to the environment. here comes a heavy burden

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