The invention discloses a
gasoline engine EGR stratified charge
system based on a flow guiding plate, and belongs to the technical field of engines. An
exhaust pipe is fixedly connected with an intake manifold through a bypass
pipe, an EGR valve, an EGR cooler and an EGR loop. An
airflow cavity in the air inlet side of a cylinder cover part is respectively and correspondingly connected with an
airflow cavity of an air inlet diverting cavity part, an air inlet of the cylinder cover part corresponds to
branch pipes of the air inlet diverting cavity part, a
throttle valve is fixedly connected with an intake manifold hole through the intake manifold, and the exhaust
branch pipes of the
exhaust pipe are correspondingly connected with four exhaust ways of the cylinder cover part respectively.
Waste gas and
fresh air can be prevented from being early mixed outside a
combustion chamber and can also be prevented from being accumulated and mixed when an air inlet door is closed, the equipressure air intake of the
fresh air and the pressure can be achieved, the mixed degree of the
fresh air and the
waste gas can be reduced, the load control of an engine can be achieved, the circulation
thermal efficiency of a
gasoline engine is improved, high EGR efficiency can be achieved, and the
combustion economical efficiency of the
gasoline engine is effectively improved.