Intensifier-injector for gaseous fuel for positive displacement engines

An intensifier-injector for fuel gas used in combination with an internal combustion engine having a cylinder chamber which intensifier-injector comprises:

• (a) a hollow chamber means;
• (b) a reciprocating intensifier means having a large area end and a small area end mounted within the interior of the hollow chamber means;
• (c) a means for introducing compressed gas from the cylinder chamber or other source of pressurized fluid or gas into the hollow chamber means on the large area end of the intensifier means;
• (d) one-way means for enabling fuel gas to be supplied into the hollow chamber means at the small area end of the intensifier means;
• (e) injector nozzle means for enabling the fuel gas at the small area end of the intensifier means to be injected into the cylinder chamber;
• and
• (f) timing means synchronized with the internal combustion engine for opening the compressed gas the injection nozzle means (e).

A method of intensifying the pressure of gaseous fuel introduced into the compression cylinder of an internal combustion engine which comprises:

• (a) admitting fuel gas into the interior of a gas pressure intensifier means having disposed therein an intensifier means which is in a position which separates the gas pressure intensifier means into first and second chambers, the fuel gas being admitted into the first chamber which is connected to the internal combustion engine by injection nozzle means;
• (b) admitting compressed gas or fluid from an intensifier drive source from the compression cylinder to the second chamber of the intensifier means, to a point wherein the gas or fluid pressure in the second chamber causes the intensifying means to move and thereby increase the pressure in the first chamber;
• (c) permitting the compressed fuel gas in the first chamber to be expelled into a pressurized fuel gas storage cylinder or directly into the interior of the engine combustion chamber through the injection nozzle means;
• (d) permitting the injection nozzle means to close and simultaneously cause the intensifier means to reset to the position in step (a) above, thereby permitting the first chamber to be recharged with fuel gas.