Fuel oil pressure regulator
A fuel pressure and regulator technology, applied in machine/engine, low pressure fuel injection, low pressure fuel injection, etc., can solve the problems of environmental pollution, labor, fuel waste, etc.
Inactive Publication Date: 2012-09-19
HUAIYIN INSTITUTE OF TECHNOLOGY
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Problems solved by technology
This method of releasing residual fuel in the fuel system is not only time-consuming and laborious, but also causes fuel waste and environmental pollution
Method used
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[0010] The structure diagram of the fuel pressure regulator of the present invention is as follows: figure 2 shown. It consists of housing (3), diaphragm (7), spring (4), oil return valve (9), pressure relief valve (1), oil return pipe (10), oil inlet pipe (8) and air intake pipe (5) ; The valve body of the oil return valve (9) is embedded in the center hole of the diaphragm (3), and together with the diaphragm (3), the inner chamber of the fuel pressure regulator is divided into a fuel chamber (2), a fuel pressure regulating chamber (6 ) two chambers; the oil return valve (9) spool with a central through hole is connected with the oil return pipe (10) and installed on the side shell of the fuel oil chamber (2); the oil return valve (9) valve body A ball valve that can cooperate with the spool of the oil return valve (9) is arranged on the top; an oil inlet pipe (8) and a pressure relief valve (1) are also installed on the side shell of the fuel chamber (2); the fuel pressur...
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The invention discloses a fuel oil pressure regulator consisting of a shell, a membrane, a spring, an oil return valve, a pressure release valve, an oil return pipe, an oil inlet pipe and a gas inlet pipe; the valve body of the oil return valve is embedded in the central hole of the membrane to divide the inner cavity of the fuel oil pressure regulator into a fuel oil cavity and a fuel oil pressure regulation cavity with the membrane; the valve core of the oil return valve provided with a central through hole is connected with the oil return pipe and is installed on the shell on one side of the fuel oil cavity; a ball valve capable of being matched with the valve core of the oil return valve is arranged on the valve body of the oil return valve; the oil inlet pipe and the pressure release valve are also installed on the shell on one side of the fuel oil cavity; and the gas inlet pipe connected with a vacuum chamber of an engine intake manifold is installed on the shell on one side of the fuel oil pressure regulation cavity. The fuel oil pressure regulator disclosed by the invention is simple in structure and is capable of effectively regulating the fuel oil pressure in the engine fuel oil pipe to keep a constant oil spray pressure difference for the engine and guarantee the accurate control of the oil spray quantity, and the fuel oil pressure regulator disclosed by the invention can release the residual oil pressure in the fuel oil system through the pressure release valve when the engine is stopped to provide convenience for maintaining a fuel oil supply system.
Description
technical field [0001] The present invention relates to fuel pressure regulators for gasoline vehicle fuel supply systems. Background technique [0002] The fuel pressure regulator is a common component in the fuel supply system of gasoline vehicles. It plays the role of ensuring the stability of the system oil pressure and the pressure difference of the intake manifold, so that the gasoline injection quantity depends solely on the opening time of the injector. The structure of the currently used fuel pressure regulator is as follows: figure 1 As shown, when the engine is working, the diaphragm of the fuel pressure regulator is under the joint action of fuel pressure, spring force, and vacuum pressure of the intake manifold. When the upper and lower pressures of the diaphragm are equal, the diaphragm is in a balanced position. When the vacuum pressure of the intake manifold drops, the diaphragm moves upward under the combined force, the opening of the oil return valve incre...
Claims
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IPC IPC(8): F02M69/54
Inventor 王程许善珍
Owner HUAIYIN INSTITUTE OF TECHNOLOGY