Electromagnetic controlled fuel injection apparatus with poppet valve
AssigneeMitsubishi Heavy Industries, Ltd.
InventorTakashi Kaneko
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Abstract
The invention provides an electromagnetic controlled fuel injection apparatus with a poppet valve of which the beginning and end of fuel injection is controlled by the reciprocation of the poppet valve, in which inertia force and friction force arising from the reciprocating motion of the poppet valve are utilized effectively to suppress the bounce of the poppet valve. The injection apparatus is composed such that the poppet valve has a sealed inside space, and a plurality of mass objects are received in the inside space so that the mass objects can move axially while contacting with each other in the inside space due to inertia force generated by the reciprocating motion of the poppet valve.
Claims15
An electromagnetic controlled fuel injection apparatus with a poppet valve composed such that the beginning and end of fuel injection is controlled by opening and closing a passage connecting to a fuel passage communicating to a plunger room where fuel is compressed to high pressure by a plunger and to a spill passage communicating to a fuel return line by means of a poppet valve reciprocated by a solenoid device and a poppet valve spring, wherein said poppet valve has a sealed inside space, and a plurality of mass objects are received in said inside space so that the mass objects can move while contacting with each other in said inside space due to inertia force generated by the reciprocating motion of said poppet valve.
An electromagnetic controlled fuel injection apparatus with a poppet valve composed such that the beginning and end of fuel injection is controlled by opening and closing a passage connecting to a fuel passage communicating to a plunger room where fuel is compressed to high pressure by a plunger and to a spill passage communicating to a fuel return line by means of a poppet valve reciprocated by a solenoid device and a poppet valve spring, wherein said poppet valve has an inside space, and a small hole is provided at an end or each of both ends of said inside space to communicate said inside space to an outside fuel passage, whereby fuel is allowed to flow in or out of said inside space through said small hole by the reciprocating motion of said poppet valve.
Dependencies are inferred from the claim text.