IC engine powered by liquefied gaseous fuel - being metered by measuring temp. in mixing chamber and controlled by needle valve

摘要

The i.c. engine has a feed pipe for the liquified gas from a supply tank. The fuel is injected directly into a mixing chamber where it vaporises and mixes with combustion air causing cooling of the gas. The temperature is controlled by varying the fuel mixture through a control needle valve. The valve is actuated by a control impulse signal which opens or closes the valve intermittently. The device measure the error which causes a change in the signal.