Fuel and air separation active control type ignition chamber system

Abstract

The invention discloses a fuel and air separation active control type ignition chamber system, and relates to the technical field of combustion of internal combustion engines. The system comprises an air supply branch and a fuel supply branch which are arranged at the top of an ignition chamber; the ignition chamber is arranged on a cylinder cover or an ignition chamber adapter single body, the cylinder cover or the ignition chamber adapter single body is provided with a sparking plug, an air channel and a fuel channel, the sparking plug is arranged above the ignition chamber, the air channel and the fuel channel communicate with the ignition chamber, the air supply branch communicates with the air channel, and the fuel supply branch communicates with the fuel channel; pre-combustion air is directly supplied by an air pressure pump or supplied from a bypass arranged in the downstream position of a supercharger of an engine body, and air exchange of the ignition chamber is achieved through the pressure difference between the downstream position of the supercharger and the interior of the cylinder in the later stage of an exhaust stroke or the early stage of an intake stroke. After being stabilized by an air pressure accumulation chamber, the air is supplied to the air nozzle end through a one-way safety valve, active scavenging in the ignition chamber is achieved, and the composition of the mixed gas in the ignition chamber can be controlled in real time, so that the combustion stability and controllability are improved.

Description

technical field [0001] The invention relates to the technical field of internal combustion engine combustion, in particular to a fuel-air separation active control ignition chamber system. Background technique [0002] With the gradual strengthening of regulations and policies for energy saving and emission reduction, internal combustion engines for vehicle and ship power and power generation will adopt more lean premixed combustion technology. Mixed gas can improve the controllability and stability of lean premixed combustion. Secondly, the ignition chamber structure used in the high-pressure internal combustion engine can effectively increase the combustion rate, and has obvious effects on avoiding knocking and improving the constant volume of combustion. Most of the ignition chamber is passive scavenging, that is, the intake air flow of the main combustion chamber enters through the small hole at the lower end of the main body of the ignition chamber to realize the venti...

AI Technical Summary

Problems solved by technology

However, the existing method of mixing fuel and air outside the cylinder and then introducing it into the ignition chamber cannot meet the above-mentioned requirements for accuracy and real-time performance.

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