Patent attributes
A propane injector system for internal combustion engines for improving performance, fuel efficiency, safety, cleanliness and environmental friendliness. The system consists of introducing propane gas into “a black box” that has a pressure reducing valve to drop propane pressure as it flows initially from its storage tank and through an electronically controlled on/off valve. Propane enters an injector manifold where it is distributed to two specially designed gas handling fuel injectors that act as variable flow rate pumps controlled by a programmable microprocessor that is pre programmed for specific vehicles or can be customized with improved performance programming as determined by the vehicle owner. A pressure feedback system senses when the engine blower has caused a pressure boost on its high side feeding the cylinders. Transducers located in a Manifold Absolute Pressure (MAP) sensor detect the pressure boost and communicate with the microprocessor. This intake manifold pressure sensing provides feedback to the processor that controls the fuel injectors to customize the amount of propane being fed to the engine on an “as needed” basis. Information on engine performance is programmed into the computer controller, i.e. microprocessor, to provide the flow rates for the added propane. This arrangement maximizes fuel efficiency and minimizes propane use. A temperature sensor on the exhaust side monitors exhaust gasses and disables the system if excessive temperatures are experienced.
