Supplemental Vapor Fuel Injection System for Internal Combustion Engines
First Claim
1. A supplemental vapor fuel injection system for internal combustion engines, comprising:
- a source of supply of a supplemental fuel;
a vaporizer/pressure regulator that is compensated to a load on a given internal combustion engine and operable to receive said supplemental fuel from said source of supply thereof and produce a regulated vapor fuel;
a fuel injection control assembly connected in flow communication with a post-turbocharger airstream and with said regulator and operable to receive regulated vapor fuel from said regulator and to receive a stream of fuel injection pulses and inject the regulated vapor fuel into the post-turbocharger airstream in accordance with said stream of fuel injection pulses;
a plurality of sensors operable to sense data in real time relating to operating characteristics of the given internal combustion engine; and
a controller unit that stores and utilizes a program to generate said stream of fuel injection pulses that controls the injection of the regulated vapor fuel based on an engine manufacturer'"'"'s specifications relating to the given internal combustion engine and real time sensor data received from said plurality of sensors.
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Abstract
A supplemental vapor fuel injection system for internal combustion engines capable of utilizing numerous supplemental vapor type fuels such as propane, compressed natural gas (CNG), liquid natural gas (LNG), butane, ammonia, biogas, hydrogen, ammonia, and Hythane®. The system includes a vaporizer/pressure regulator that provides pressure regulated vapor fuel to two specially designed vapor fuel injectors and a controller unit capable of real-time control of the vapor fuel injectors. The injectors meter precise amounts of vapor fuel into a manifold that combines the vapor for delivery to a directional nozzle located in an airstream of the diesel engine.
37 Citations
20 Claims
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1. A supplemental vapor fuel injection system for internal combustion engines, comprising:
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a source of supply of a supplemental fuel; a vaporizer/pressure regulator that is compensated to a load on a given internal combustion engine and operable to receive said supplemental fuel from said source of supply thereof and produce a regulated vapor fuel; a fuel injection control assembly connected in flow communication with a post-turbocharger airstream and with said regulator and operable to receive regulated vapor fuel from said regulator and to receive a stream of fuel injection pulses and inject the regulated vapor fuel into the post-turbocharger airstream in accordance with said stream of fuel injection pulses; a plurality of sensors operable to sense data in real time relating to operating characteristics of the given internal combustion engine; and a controller unit that stores and utilizes a program to generate said stream of fuel injection pulses that controls the injection of the regulated vapor fuel based on an engine manufacturer'"'"'s specifications relating to the given internal combustion engine and real time sensor data received from said plurality of sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A supplemental vapor fuel injection system for internal combustion engines, comprising:
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a source of supply of a supplemental fuel; a vaporizer/pressure regulator operable to receive said supplemental fuel from said source of supply thereof and produce a regulated vapor fuel; a vapor fuel injection nozzle directionally mounted in a predetermined relationship in an airstream of a given internal combustion engine; a manifold connected in flow communication with said vapor fuel injection nozzle; one or more vapor fuel injectors connected in flow communication with said manifold and said regulator and operable to receive the regulated vapor fuel from said regulator and to receive a stream of fuel injection pulses and to meter precise portions of the regulated fuel vapor for injection into said manifold and thereafter into the airstream of the given internal combustion engine by said directionally mounted vapor fuel injection nozzle; a plurality of sensors operable to sense data in real time relating to operating characteristics of the given internal combustion engine; and a controller unit including one or more microprocessors that store and utilize a program to generate said stream of fuel injection pulses that controls the injection of the regulated vapor fuel based on an engine manufacturer'"'"'s specifications relating to the given internal combustion engine and said real time sensor data received from said plurality of sensors. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A supplemental vapor fuel injection system for internal combustion engines, comprising:
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a source of supply of a supplemental fuel; a vaporizer/pressure regulator that is compensated to a load on a given internal combustion engine and operable to receive said supplemental fuel from said source of supply thereof and produce a regulated vapor fuel; a fuel injection control assembly connected in flow communication with a post-turbocharger airstream and with said regulator and operable to receive regulated vapor fuel from said regulator and to receive a stream of fuel injection pulses and inject the regulated vapor fuel into the post-turbocharger airstream in accordance with said stream of fuel injection pulses; and a controller unit that stores and utilizes a program to generate said stream of fuel injection pulses that controls the injection of the regulated vapor fuel based on an engine manufacturer'"'"'s specifications relating to the given internal combustion engine and real time data received by sensing of engine RPM, throttle position, supplemental vapor fuel pressure, supplemental vapor fuel temperature, engine coolant temperature, exhaust gas temperature, and supplemental fuel level to diagnose system parameters wherein the parameter values are monitored and actions are initiated in the event of one or more faults. - View Dependent Claims (19, 20)
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Specification