Air inflow filling amount forming system for dual-fuel homogenizing compression-ignition engine

Abstract

An engine air inflow filling amount forming system in the technical field of internal combustion engines comprises an intake manifold, a heating pipe, a gasoline supply system and an n-heptane oil supply system. One side of the intake manifold is connected with an engine, the other side of the intake manifold is connected with the heating pipe, an oil sprayer of the gasoline supply system is connected with a first oil sprayer seat, and an oil sprayer of the n-heptane oil supply system is connected with a second oil sprayer seat. In the working process, an inflow temperature is adjusted by applying a heating system; a zirconium oxide thermal insulation layer is sprayed on pipes after a heating device and the inner wall surface and the outer wall surface of the intake manifold, heat loss can be effectively reduced, and the requirements of the engine for a heater are reduced; two groups of oil sprayers are symmetrically distributed at the tail end of the intake manifold, oil beams can be directly sprayed into an air inflow duct high in temperature, thereby being favorable for achieving uniform mixing of fuel and air; and two oil supply systems controls proportion of gasoline and n-heptane in real time and adjusts fuel property. The novel engine air inflow filling amount forming system is reasonable in design and simple in structure.

Description

technical field [0001] The invention relates to a novel engine intake charge formation system in the technical field of internal combustion engines, in particular to a gasoline-n-heptane dual-fuel homogeneous compression ignition engine intake charge formation system based on a traditional gasoline engine. Background technique [0002] With the development of modern society, people have higher and higher requirements for engine energy saving and environmental protection. As a new type of engine combustion mode, homogeneous compression ignition can reduce fuel consumption rate and greatly reduce nitrogen oxide emissions. To achieve homogeneous compression ignition on a traditional gasoline engine, it is necessary to take measures such as increasing the compression ratio and heating the intake air. Due to the limitation of the strength of the cylinder block and the coordinated ignition working mode under high load conditions, the engine compression ratio is generally controll...

AI Technical Summary

Problems solved by technology

On the one hand, the engine has a relatively high compression ratio, and homogeneous compression ignition can be realized at a relatively low intake air temperature. The system does not involve the intake heating device and the insulation treatment of the intake system, and the intake air temperature cannot reach that of a traditional gasoline engine. The operating requirements of the homogeneous compression ignition engine; on the other hand, the injector angle of the device is not strictly limited and the position is far from the intake port, which has a certain influence on the formation of homogeneous mixture

Images