| 摘要 |
PURPOSE: A mixer control valve performance test apparatus is provided to reduce development period and cost by performing durability and performance test during the development of mixer control valve of carburetor. CONSTITUTION: An apparatus comprises a measuring unit attached to a valve(24) for measuring stroke of a mixture control valve(20); a first negative pressure generating unit for generating a negative pressure to a valve chamber; a first flowmeter(18) for metering the amount of air being passed through the first negative pressure generating unit; a fourth pressure gauge(43) for measuring the negative pressure generated by the first negative pressure generating unit; a second negative pressure generating unit for generating a negative pressure to an A-section(21) of the mixture control valve; a first pressure gauge(40) for measuring the negative pressure generated by the second negative pressure generating unit; a differential pressure measuring plug(23) for measuring the pressure generated in a B-chamber(22) of the mixture control valve; a gasoline tank(38) connected to the differential pressure measuring plug so as to supply a gasoline; a second flowmeter(35) for measuring the amount of fed air; a second solenoid valve(36) for selecting a gasoline or an air; a first solenoid valve(27) for interconnecting or disconnecting the A-chamber and B-chamber; a third pressure gauge(42) for measuring the pressure of air being supplied; a fourth solenoid valve(17) connected to the first negative pressure generating unit, and which opens/shuts off a path; a third solenoid valve(29) connected to the second negative pressure generating device, and which opens/shuts off a path; and a second pressure gauge(41) connected to the rear end of the third solenoid valve, and which measures the pressure of the A-chamber.
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