Dual-fuel engine inlet 45-degree four-hole spray pipe

Abstract

The invention discloses a dual-fuel engine inlet 45-degree four-hole spray pipe, and aims at solving the problem that the total hydrocarbon emission is high when an engine is in small-load operation and air is mixed unevenly. The dual-fuel engine inlet 45-degree four-hole spray pipe, that is an L-shaped natural gas spray pipe (1), comprises a left-end vertical pipe, a middle bending pipe and a right-end horizontal pipe which are sequentially and smoothly connected in to a whole; the outer diameters of the left-end vertical pipe, the middle bending pipe and the right-end horizontal pipe are same, the inner diameters of the left-end vertical pipe, the middle bending pipe and the right-end horizontal pipe are same, and the rotary axes of the left-end vertical pipe and the right-end horizontal pipe are perpendicularly intersected; the L-shaped natural gas spray pipe (1) is made of an integrated or separated type pipe fitting; the right-end horizontal pipe comprises a right-end horizontal pipe body and a spray pipe outlet stop block (3) which are fixedly connected in a welding mode, and the rotary axis of the right-end horizontal pipe body and the symmetrical axis of the spray pipe outlet stop block (3) are collinear.

Description

technical field [0001] The invention relates to a nozzle applied to a natural gas / diesel dual-fuel engine, more specifically, the invention relates to a 45-degree four-hole nozzle of an intake port of a dual-fuel engine. Background technique [0002] With the global consumption of petroleum energy, natural gas is increasingly favored by major automakers. The conversion of heavy-duty diesel engines to natural gas / diesel dual-fuel engines can greatly reduce the emission of soot, which can not only alleviate the problem of diesel consumption, but also reduce the problem of high particulate emissions from diesel engines. At present, natural gas / diesel dual-fuel engines generally use multi-point injection in the intake port for intake air, and the natural gas nozzles currently used are injected along the direction of the air channel axis. The research results show that natural gas / diesel dual-fuel Multi-point ignition, the current type of nozzle will cause high total hydrocarbon...

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 under a small load and the air is not mixed uniformly, and provides a dual-fuel engine intake port with a 45-degree four-hole nozzle

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