3 results about "Multi-valve" patented technology

The invention discloses a composite turbulent flow EGR stratified combustion system for a gas engine, which comprises a multi-valve composite turbulent flow structure, a rotational flow and turbulent flow mixer and a self-adaptive high-energy ignition system, and the multi-valve composite turbulent flow structure ensures that both a core area flow field and a peripheral area flow field of a combustion chamber have enough turbulent flow intensity; an EGR layered control strategy of an air inlet channel is achieved through air inlet manifold distribution and air channel arrangement, the EGR concentration of a mixture entering a tumble air channel is low, the EGR concentration of a mixture entering a vortex air channel is high, and therefore the space distribution rule of low EGR of a flow field of a combustion chamber core area and high EGR of a flow field of a combustion chamber peripheral area is achieved. Through the synergistic effect of the composite turbulent flow system, EGR layering, intake manifold turbulent flow and self-adaptive high-energy ignition, the comprehensive effects of rapid formation of fire cores at the initial stage of combustion, flame propagation acceleration, reduction of the knocking tendency and enhancement of combustion stability are achieved, and the self-adaptive high-energy ignition system is particularly suitable for popularization and application of natural gas fuel in heavy trucks and ship engines.

A pump comprising a fluid end comprising a bellows housing having an interior volume, a power end, a reciprocating element, a bellows disposed at least partially within the bellows housing and dividing the interior volume of the bellows housing into a first volume interior to the bellows and a second volume exterior to the bellows, suction valve(s) fluidly coupled to the second volume of the bellows housing. and discharge valve(s) fluidly coupled to the second volume of the bellows housing. The suction valve(s), the discharge valve(s), or both the suction valve(s) and the discharge valve(s) comprise a redundant valve including at least two of said valves, such that, during normal operation, one of the at least two said valves of the redundant valve is open / online while another of the at least two said valves of the redundant valve is closed / offline.

The present invention discloses a diesel engine multi-valve intake duct performance test device and test method, which mainly includes a flow meter, an intake duct hose, a valve seat, a cylinder head, an intake electric actuator, a valve guide, a sealing plate, an intake spring, a boss, a valve, a transparent cylinder liner, a valve seat valve stem, a multi-rotation electric actuator, a cylinder base plate, a cylinder base plate valve stem, an exhaust electric actuator, a swivel, an airway pressure sensor, an in-cylinder pressure sensor, an airway temperature sensor, and a data acquisition system. The valve lift is controlled by a linearly driven electric actuator to regulate the up and down movement of the intake valve guide and valve. The valve seat is connected to the swivel, and the multi-rotation electric actuator drives the valve seat through the valve seat valve stem, so that the swivel can move in a plane within the hollow area of ​​the cylinder head perpendicular to the valve guide axis. The nested intake duct and snap-on cylinder liner are used to adjust the intake position and cylinder diameter, realizing variable multi-valve airway performance testing.