Dual-fuel engine air-inlet four-hole spray pipe capable of spraying out vertically

Abstract

The invention discloses a dual-fuel engine air-inlet four-hole spray pipe capable of spraying out vertically and aims to solve the problem of high total hydrocarbon emissions when an engine is operated with a small load and air is not mixed uniformly; the dual-fuel engine air-inlet four-hole spray pipe capable of spraying out vertically is an L-shaped natural gas spray pipe (1) composed of a left end vertical pipe and a right end horizontal pipe; the left end vertical pipe and the right end horizontal pipe are smoothly connected into a whole; the left end vertical pipe and the right end horizontal pipe are the same in inner and outer diameters; the left vertical pipe is perpendicularly intersected with a rotation axis of the right end horizontal pipe; the right end horizontal pipe comprises a right end horizontal pipe body and a spray pipe outlet retaining wall (3); the spray pipe outlet retaining wall (3) is a circular flat-plate structural part; the diameter of the spray pipe outlet retaining wall (3) is equal to the outer diameter of the right end horizontal pipe body; the right end of the right end horizontal pipe body is fixedly connected with the spray pipe outlet retaining wall (3) in a welding manner; the rotation axis of the right end horizontal pipe body is collinear with a symmetry axis of the spray pipe outlet retaining wall (3).

Description

Technical field [0001] The invention relates to a nozzle belonging to the technical field of natural gas / diesel dual-fuel engine jet technology. More specifically, the invention relates to a four-hole nozzle with a dual-fuel engine intake port injecting vertically outward. Background technique [0002] With the global oil energy consumption, natural gas is more and more favored by major automobile manufacturers. The conversion of a heavy-duty diesel engine to a natural gas / diesel dual-fuel engine can greatly reduce soot emissions, which can alleviate the problem of diesel consumption and reduce the problem of high particulate emissions from diesel engines. At present, natural gas / diesel dual-fuel engines generally use port multi-point injection for air intake, and the natural gas nozzles currently used are injected along the axis of the airway. Research results show that natural gas / diesel dual-fuel engines are pilot diesel There are many points of fire. At present, this type of...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problem of high total carbon and hydrogen emissions when the engine is running at a small load and the air is not mixed uniformly, and provides a four-hole nozzle that injects vertically outwards from the intake port of a dual-fuel engine

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