Flame preheating plug

Abstract

The invention discloses a flame preheating plug. The flame preheating plug comprises a flame cover, oil injector fixing seats, a fixing seat mounting plate, a heating rod fixing seat and a heating rod, wherein the flame cover is composed of a head semicircular tubular structure and a bottom circular tubular structure, and heat outlet holes are uniformly distributed in the circular tubular structure in the circumferential direction; two symmetrically-installed heating pipes are arranged at the lower end of the head of the heating rod fixing seat, a row of through holes are machined in a connecting plate rib of the two heating pipes, the heating pipes are of a three-quarter circular pipe structure, the heating rod is inserted into the heating rod fixing seat, and part of the surface of the heating rod is exposed out of the flame cover through the notches of the heating pipes; three kidney-shaped through grooves are machined in the fixing seat mounting plate, a middle groove hole is used for injecting fuel oil into the flame cover through an oil injector, and oil injector fixing seats are mounted in the groove holes in the two sides; the fixing seat mounting plate is fixedly connected to the open side surface of the head of the flame cover; the oil injector mounting surfaces of the oil injector fixing seats are inclined, so that the oil injector injects oil in the inclined downward direction; according to the invention, fuel oil can be fully vaporized and combusted.

Description

technical field [0001] The invention belongs to the technical field of engine low-temperature starting, and in particular relates to a flame glow plug. Background technique [0002] Low-temperature starting performance is one of the important performances of diesel engines. Under low-temperature conditions, the intake air temperature, fuel temperature, and body temperature are low, and the fuel atomization effect is poor, resulting in difficult starting, poor economy and power, and serious emission pollution. Diesel engine performance and life. The intake air is heated by the flame glow plug, which can improve the fuel atomization effect, increase the probability of ignition, and effectively improve the low-temperature starting performance. [0003] Existing flame glow plugs used for heating intake air are mainly composed of a shell, a heating rod, an oil inlet nozzle, and a flame cover that leads out of the heat hole. During operation, diesel is supplied to the housing thr...

AI Technical Summary

Problems solved by technology

[0004] In the existing flame glow plug, the positions of the oil inlet nozzle and the heating rod are relatively fixed. When the oil inlet flow rate and voltage are constant, the heating rod has a certain effect on the vaporization of diesel oil, which leads to a single flame glow plug. The performance itself cannot be adjusted according to the demand; on the other hand, when the existing flame glow plug is working, a relatively large amount of liquid diesel oil flows directly to the heating rod and is in close contact with the heating rod, which may cause insufficient combustion. Coking, carbon deposition and other problems

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