Gas and liquid contact apparatus – Fluid distribution – Valved
Reexamination Certificate
1999-11-16
2001-07-24
Chiesa, Richard L. (Department: 1724)
Gas and liquid contact apparatus
Fluid distribution
Valved
C261S064400
Reexamination Certificate
active
06264175
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an automatic adjustment carburetor capable of offering fuel economy and low pollution, especially to a device using a set of simple equipment to achieve automatic air-blocking, horsepower adjustment, and gas enrichment. This device is used to match basic structure and functions of the conventional carburetor to acquire the effects of fuel economy and low pollution.
BACKGROUND OF THE INVENTION
In order to meet requirement of environmental protection, the problem of how to reduce discharge of hydrocarbon (HC), carbon monoxide (CO), and nitrogen oxide (NO
x
) of cars and motorcycles is an imperative issue. The conventional carburetor is used to provide proper air/fuel mixing ratios to meet the requirement of the engine at different rotation speeds. While much research has been managed, the problem of how to achieve optimal fuel consumption yet not deteriorate the engine performance is not fully solved. The conventional carburetor generally consumes more fuel to pay for the maintenance of the horsepower. Therefore, more than required fuel is consumed and the exhaust gas results in a more serious problem of air pollution.
Other researchers try to use a cam transmission mechanism for control, but the transmission mechanism is complicated while achieved control is limited.
SUMMARY AND OBJECTIVES OF THE PRESENT INVENTION
Accordingly, the objective of the present invention is to provide an automatic adjustment carburetor capable of offering fuel economy and low pollution, which provides fuel at the most economic condition yet does not influence the horsepower. Total combustion can be achieved to increase efficiency and save fuel, and the exhaust gas generates least pollution under any condition. Moreover, the present invention adopts the principle of negative pressure using a set of simple equipment to achieve the effect of automatic adjustment. Advantages of fuel economy, large horsepower, low pollution, low cost, and high efficiency are all acquired at the same time.
An automatic adjustment air-blocking device and a gas enrichment device are appended in the intake passage of the carburetor according to the present invention. The air-blocking device is disposed in the intake passage in front of a throttle having a fuel needle. The middle section of the intake passage forms a room with a neck. A venturi tubular front part of expanding arc shape was formed extendedly forward from the neck in the intake passage. A rear part of pot belly shape was formed extendedly backward from the neck in the intake passage. An annular groove at the outer end of the intake passage joins an intake annular seat. A positioning shaft has a plurality of positioning grooves installed near two ends thereof. One positioning groove on each end of the positioning shaft joins a locking spring. The front end of the positioning shaft extends into a central hole of the intake annular seat to join a thread screwed with a nut. An air-blocking cone lags the positioning shaft. The front end of the air-blocking cone sticks to the front locking spring. A spring seat with a diameter larger than that of the locking spring is installed at the rear end of the air-blocking cone to lag one end of a spring. The other end of the spring sticks to a protruding locking edge at the other end of the positioning shaft. If the throttle at the rear part generates a negative pressure, the air-blocking cone will reciprocate back and forth. An exit of an emulsifying tube of the gas enrichment device is installed connectedly to the neck. When the air-blocking cone moves backward, the room of the neck changes, and fuel gas adjusts automatically.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawings, in which:
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Chiesa Richard L.
Rosenberg , Klein & Lee
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