초록 ▼

A slow-run system for gaseous fueled internal combustion engines, including gaseous fuel conversions of liquid fuel engines for alternate operation on either fuel, employs a valve having an inlet receiving gaseous fuel from between the primary regulator and zero pressure governor and an outlet empty

A slow-run system for gaseous fueled internal combustion engines, including gaseous fuel conversions of liquid fuel engines for alternate operation on either fuel, employs a valve having an inlet receiving gaseous fuel from between the primary regulator and zero pressure governor and an outlet emptying into the air cleaner assembly upstream of the liquid fuel carburetor or equivalent means. The valve is actuated through a connection into the engine air intake manifold or similar passage below the throttle such that the valve opens to supply gaseous fuel to the air cleaner assembly during slow-run when manifold vacuum is high and remains open throughout substantially all of the engine\s operating range.

대표청구항 ▼

In a system for operating an internal combustion engine on gaseous fuel, the system including gaseous fuel supply means, primary regulator means, zero pressure governor means and an arrangement for slow-run of the engine, the engine including an engine air supply passage having throttle means therei

In a system for operating an internal combustion engine on gaseous fuel, the system including gaseous fuel supply means, primary regulator means, zero pressure governor means and an arrangement for slow-run of the engine, the engine including an engine air supply passage having throttle means therein for varying the supply of mixed gaseous fuel and air to the engine, the primary regulator supplying gaseous fuel to the zero pressure governor at a pressure above that in the engine air supply passage and the zero pressure governor supplying gaseous fuel through first communicating means to the engine air supply passage upstream of said throttle means, wherein the slow-run arrangement comprises: valve means having an inlet and an outlet, the valve inlet receiving gaseous fuel at said pressure from the primary regulator through second communicating means, and the engine air supply passage above said throttle means receiving gaseous fuel from the valve outlet through third communicating means independent of the zero pressure governor and the first communicating means effective to prevent gaseous fuel pressure in the third communicating means from influencing operation of the zero pressure governor; control means responsive to operation of the engine effective to close the valve means when the engine is not operating and to open the valve means for supply therefrom of gaseous fuel to said air supply passage when the engine is operating; and adjusting means for varying the quantity of gaseous fuel delivered through the third communicating means to said air supply passage when the valve means is open as aforesaid.