Air valve device for an internal combustion engine
OwnerWon F. Youinventor
Life of this patent
Estimating the term…
Abstract
A gasoline engine air valve fuel saver device, characterized in the ability to have the air valve opened automatically in circumstances where the vehicle concerned is reducing its speed, going downhill or the suction from within the carburetor is great while the engine rotation speed remains higher than 920 RPM (equivalent to the speed of 25 Kms per hour as effected by the high-speed gear shifting), so that the air may bypass the carburetor at it passes from the air filter to the intake manifold to reach the cylinders, so as to reduce the vacuum in the intake manifold and so reduce the quantity of gasoline that will enter the cylinders, to achieve a saving of fuel consumption and abatement of air pollution as well.
Claims7
An air valve device for an internal combustion engine which has a fuel supply with an air intake providing an air fuel mixture to an inlet of the engine, the air valve device comprising
- at least first and second alternative air intake channels in a parallel relationship to each other which bypass the fuel supply and supply air directly to the inlet of the engine,
- first valve means to control air flow through said first air intake channel, allowing air flow through said first air intake channel, allowing air flow through said first channel when the pressure at the inlet of the engine falls below a preset limit,
- second valve means to control air flow through said second air intake channel,
- tachometer means to indicate the speed of the engine, connected to said second valve means to permit the passage of air through said second air intake channel when the speed of the engine is greater than a preset limit,
- said tachometer means including
- a rectifying stage, an integrating stage, and amplifying stages electrically interconnected to rectify and then integrate a signal input to said tachometer means and amplify the signal to an overall gain in said amplifying stages such that the output current from said tachometer means is large enough to operate said second valve means when the rotational speed of the engine exceeds 920 revolutions per minute.
Dependencies are inferred from the claim text.