Motor vehicle air-fuel ratio automatic control device
AssigneeHaw Mei Engineering Enterprise Co., Ltd.
InventorJin Y. Yeh
Life of this patent
Estimating the term…
Abstract
A motor vehicle air-fuel ratio automatic control device comprises an electromagnetic valve electrically connected to the generator of a motor vehicle to control the passageway of an air loop to the fuel pipe of the motor vehicle. Starting the engine of the motor vehicle causes the electromagnetic valve to open the passageway to supply additional air to the fuel pipe so as to increase the proportion of air in the air-fuel ratio. Stopping the engine of the motor vehicle causes the electromagnetic valve to be electrically disconnected so that the passageway is closed whereby the proportion of air in the air-fuel ratio is reduced to enable a subsequent easy starting of the engine.
Claims2
A motor vehicle air-fuel ratio automatic control device comprising:
- an electromagnetic valve enclosed by an outer shell having an air intake port and an air outlet hole, said electromagnetic valve including a coil holder housing a coil, an air passage hole interconnecting said air intake port with said air outlet hole, a valve member located between said air passage hole and one of said air intake port and said air outlet hole, an axle spaced from said valve member, and a spring supported between said valve member and said axle, said coil having one end adapted to be connected to an engine driven generator of a motor vehicle and an opposite end adapted to be grounded, said valve member being normally biased by said spring to block said air outlet hole to prevent fluid communication between said air intake port and said air outlet port;
- a hollow screw member comprising an air passage through the longitudinal axis thereof, said hollow screw member having one end fluidly connected to said air outlet hole of said electromagnetic valve and an opposite end adapted to be connected to a fuel pipe of a motor vehicle;
- and
- wherein electrically energizing said coil causes said valve member to be attracted by said axle so as to shift said valve member against the biasing force of said spring and permit said air outlet hole to be in open fluid communication with said air intake port for delivering a current of air into the fuel pipe;
- electrically de-energizing said coil causes said valve member to be shifted back by the biasing force of said spring to again block said air outlet hole.
Dependencies are inferred from the claim text.