Internal combustion engine with fuels being mixed and ignited on the spot and control method thereof

Abstract

The invention provides an internal combustion engine with fuels being mixed and ignited on the spot and a control method thereof, in particular preparation, feeding and combustion control of fuels of a combustion engine. A set of high-cetane and high-octane fuel feed and control system is additionally arranged in the internal combustion engine, and the system comprises a mixed fuel electronic control unit (8), a high-octane fuel box (9), a high-octane fuel pressure regulator (10), a high-octane fuel nozzle (13), a high-cetane fuel nozzle (14), a high-cetane fuel pressure regulator (17) and a high-cetane fuel box (18); and by controlling the high-octane flue nozzle, the high-cetane fuel nozzle and an ignition module, the spot mixing, the mixing ratio control, the excess air coefficient control and the ignition control of high-octane fuel and high-cetane fuel are achieved. The invention avoids accidental fire of the traditional single-fuel spark-ignition internal combustion engine in a cold starting process, improves the idling performance and the intermediate-speed and high-speed performance of the internal combustion engine effectively, and achieves the aims of energy saving and emission reduction of all working conditions of the internal combustion engine.

Description

technical field [0001] The invention provides an on-site fuel mixing ignition internal combustion engine and a control method thereof, in particular to fuel preparation, supply and combustion control of a combustion internal combustion engine. Background technique [0002] Since the 1970s, with the widespread application of electronic technology and exhaust gas after-treatment technology, the fuel consumption and harmful emissions of internal combustion engines have been greatly reduced. The traditional gasoline engine belongs to premixed homogeneous combustion. Due to the limitation of many factors such as knocking, the compression ratio is low and the thermal efficiency is low. The use of electronic control and exhaust after-treatment devices can make the gasoline engine achieve extremely low emissions. Compared with gasoline engines, diesel engines have higher compression ratio, higher thermal efficiency and superior fuel economy. However, the combustion of traditional di...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned problems of difficult control of ignition timing, easy fire at low load, easy detonation at high load, and narrow operating conditions, so as to realize flexible control of the fuel octane number of spark ignition internal combustion engines, improve the starting performance of internal combustion engines, reduce the Fuel Consumption and Emissions

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