Gas engine ventilation system and control method

Abstract

The invention discloses a gas engine ventilation system and a control method. The system involves an air filter, a turbocharger, an intercooler, a throttle valve, an engine combustion chamber, an engine crankcase and an oil-gas separator; the system further involves a pneumatic diaphragm three-way regulating valve; the air filter is connected with an air compressor of the turbocharger through a first air inlet pipe; the other end of the air compressor of the turbocharger is connected with the intercooler; the other end of the intercooler is connected with the throttle valve; the other end of the throttle valve is connected with the engine combustion chamber through a second air inlet pipe; the engine crankcase is connected with the oil-gas separator; and the oil-gas separator is in communication with the first gas inlet pipe and the second gas inlet pipe through the pneumatic diaphragm three-way regulating valve. According to the system, the engine oil consumption can be greatly reduced, the emission level of an engine is improved, and the reliability of the engine is improved.

Description

technical field [0001] The invention relates to the technical field of national VI engine ventilation, in particular to a gas engine ventilation system and a control method. Background technique [0002] In the existing National VI gas ventilation system, fresh air (hereinafter referred to as "fresh air") is air-filtered and then enters the supercharger compressor to become high-temperature and high-pressure gas. After passing through the intercooler, the temperature decreases, and then through the adjustment The opening of the throttle valve reduces the pressure in the intake pipe to the required level, and then the fresh air with adjusted temperature and pressure enters the combustion chamber of the engine, where it reacts with the fuel in the combustion chamber, and the gas produced after combustion (hereinafter referred to as "exhaust gas") ") Most of the exhaust gas reaches the turbocharger turbine through the exhaust pipe, drives the turbine to rotate to do work on the...

AI Technical Summary

Problems solved by technology

This will lead to the following problems: 1. A substantial increase in engine oil consumption; 2. The combustion of engine oil entering the combustion chamber leads to poor emissions; 3. Some engine oil stored in the intake pipe enters the combustion chamber in large quantities when the working conditions change. May cause detonation or misfire, affecting engine reliability and safe operation

Images