Engine and air inlet system thereof

Abstract

The invention discloses an engine and an air inlet system thereof. The air inlet system of the engine comprises an air inlet pipe, an air inlet manifold, and an auxiliary air inlet component that is arranged on the air inlet pipe and located at the front of the air inlet manifold of the engine; the auxiliary air inlet component comprises an auxiliary air inlet passage, an auxiliary air outlet passage and a center passage; air enters via the auxiliary air inlet passage, comes out from the auxiliary air outlet passage, enters the center passage, and is mixed with air coming from the air inlet pipe; the auxiliary air inlet component may comprise at least one nozzle for humidifying the air; the nozzle is detachably mounted on the auxiliary air inlet component; and liquid is sucked into a main pipeline of the air inlet system by differential pressure in the main pipeline, is mixed with the air, and then enters an air cylinder of the engine. With the adoption of the engine and the air inlet system of the engine, emission and oil consumption can be reduced effectively, the efficiency of the engine, the low-speed torque characteristic of the engine and the low-temperature cold start effect of the engine can be improved, surging of the engine can be inhibited, and the shifting smoothness can be improved.

Description

technical field [0001] The present invention relates to internal combustion engines, in particular to the field of internal combustion engine control based on oil-gas mixed combustion, including gasoline engine control, diesel engine control, natural gas and flexible fuel (mixture of methanol, ethanol, dimethyl ether and gasoline, etc.) Vehicle control and application of the above engines. Background technique [0002] The main purpose of internal combustion engine supercharging technology is to increase the intake air volume of the cylinder in a single combustion cycle by increasing the pressure of the intake air of the internal combustion engine, thereby increasing the power and torque of the engine. Air includes fresh air, as well as combustible gases mixed with fuel. At present, the mainstream supercharging methods include turbocharging (Turbo Boost), supercharging, electric turbocharging, and hybrid supercharging systems (twin turbocharging, turbocharging + mechanical ...

AI Technical Summary

Problems solved by technology

[0009] Although the above compound supercharging systems take into account the operation effect of the engine under all working conditions, due to the increase in parts of the supercharging system, the intake and exhaust system of the engine is very complicated, and the supercharging switching control of the multi-stage supercharging system is complicated. The control algorithm and matching calibration of the control system put forward higher requirements

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