On-off valve for a gas injection system, particularly of methane, for internal combustion engines
AssigneeC.R.F. Societa Consortile per Azioni
InventorMario Ricco
Life of this patent
Estimating the term…
Abstract
On-off valve intended to be arranged at the outlet of the gas accumulation reservoir in an electronic gas injection system for an internal combustion engine, presenting a valve member made of metallic material, co-operating with a valve seat made in a body, which is also made of metallic material, to ensure the good quality of tightness in all operative temperature and pressure conditions, with prolonged reliability in time.
Claims7
Gas injection system, particularly of methane, for internal combustion engine, comprising:
- a plurality of electromagnetically controlled injectors, associated to the various cylinders in the engine,
- a distributing manifold or rail communicating with said injectors,
- a feeding reservoir of the distributing manifold where pressurised gas is accumulated,
- a pressure regulating valve interposed in the connection between the reservoir and said distribution manifold,
- an electronic control unit set up to control the injectors and to control the opening time to meter the amount of gas injected in each cylinder according to the operating conditions of the engine and,
- an on-off valve arranged on the output of the reservoir, comprising a valve member, co-operating with a valve seat and a solenoid to recall the valve member to an open condition against the action of elastic means, wherein said valve member (18) is made of metallic material and in that said valve seat is made in a metallic material body.
On-off valve for a gas injection system intended to be arranged at the outlet of the gas accumulation reservoir, comprising a valve member and a solenoid for recalling the valve member to an open condition against the action of elastic means,
- wherein the valve member is made of metallic material and in that said valve seat is made in a body which is also made of metallic material.
On-off valve essentially as described and illustrated with reference to the accompanying drawings.
Dependencies are inferred from the claim text.