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US 6,662,788 B2Granted
Remote metering for gaseous fuels and oxidizers
OwnerLance E. Nistinventor
Life of this patent
Estimating the term…
Abstract
A separate metering and metering unit for a diesel and/or propane or similar gas/liquid fuel powered internal combustion engine such as a dual fueled engine incorporates an intake filter, a lockout solenoid, and a metering device into a single integrated unit remote of the carburetor of the engine. The metering unit includes a heater immediately adjacent to the output of the injector metering device in order to provide heat necessary to prevent any freezing of the unit injector or gaseous fuel or oxidizers downstream of the metering unit. The injection of the propane allows for correct operation of a catalytic converter.
Claims46
A metering apparatus for metering a compressed combustible gas, the metering apparatus comprising:
- a source of compressed combustible gas;
- a gas powered unit;
- a pod with an inlet passage and an outlet passage, said inlet passage being connected to the source of compressed combustible gas, said outlet passage being connected to the gas powered unit for providing gas to the gas powered unit, and a sealed passage in the pod connecting said inlet passage to said outlet passage;
- a temperature sensor for sensing the temperature of said outlet passage;
- an injector metering device disposed in said sealed passage, said injector metering device having a controllable parameter comprising a temperature of said injector metering device, said injector metering device selectively metering compressed gas from said inlet passage to said outlet passage;
- means to control said controllable parameter, comprising a heater providing heat to the injector metering device to control said controllable parameter responsive to said temperature sensor;
- and
- temperature control means to control the temperature of the pod.
5 more elements
A metering apparatus for metering a compressed combustible gas, the metering apparatus comprising:
- a source of compressed combustible gas;
- a gas powered unit having an intake manifold and exhaust manifold;
- a pipe between said exhaust manifold and said intake manifold to provide for exhaust gas recirculation;
- a unit temperature sensor for sensing a measure reflective of the metering of the gas in the intake manifold;
- and
- means to control the exhaust gas recirculation responsive to said unit temperature sensor;
- a pod with an inlet passage and an outlet passage, said inlet passage being connected to the source of compressed combustible gas, said outlet passage being connected to the gas powered unit for providing gas to the gas powered unit, and a sealed passage in the pod connecting said inlet passage to said outlet passage;
- an injector metering device disposed in said sealed passage, said injector metering device selectively metering compressed gas from said inlet passage to said outlet passage;
- and
- temperature control means to control the temperature of the pod.
7 more elements
A metering apparatus for metering a compressed combustible gas, the metering apparatus comprising:
- a source of compressed combustible gas;
- a gas powered unit;
- a pod with an inlet passage and an outlet passage, said inlet passage being connected to the source of compressed combustible gas, said outlet passage being connected to the gas powered unit for providing gas to the gas powered unit, and a sealed passage in the pod connecting said inlet passage to said outlet passage;
- an injector metering device disposed in said sealed passage, said injector metering device selectively metering compressed gas from said inlet passage to said outlet passage;
- temperature control means to control the temperature of the pod;
- and
- means for heating gas in said outlet passage, and wherein said sealed passage, said injector metering device and said means for heating are integrated into said pod.
4 more elements
A metering apparatus for metering a compressed combustible gas, the metering apparatus comprising:
- a source of compressed combustible gas;
- a gas powered unit;
- a pod with an inlet passage and an outlet passage, said inlet passage being connected to the source of compressed combustible gas, said outlet passage being connected to the gas powered unit for providing gas to the gas powered unit, and a sealed passage in the pod connecting said inlet passage to said outlet passage;
- an injector metering device disposed in said sealed passage, said injector metering device selectively metering compressed gas from said inlet passage to said outlet passage;
- temperature control means to control the temperature of the pod;
- and
- a filter disposed in said sealed passage of said pod between said inlet passage and said injector metering device.
4 more elements
A metering apparatus for a liquid compressed combustible gas, the metering unit comprising:
- a source of liquid compressed combustible gas;
- a gas powered unit having an intake manifold and exhaust manifold;
- a pipe between said exhaust manifold and said intake manifold to provide for exhaust gas recirculation;
- a unit temperature sensor for sensing a measure reflective of the metering of the gas in the intake manifold;
- and
- means to control the amount of exhaust gas recirculation in response to said unit temperature sensor;
- a pod with an inlet passage and an outlet passage, a sealed passage in the pod connecting said inlet passage to said outlet passage, said pod being remote from the gas powered unit, and a pipe connecting said outlet passage of said pod to the powered unit, said inlet passage being connected to the source of compressed liquid combustible gas, and said outlet passage being connected to the gas powered unit for providing gas to the gas powered unit;
- and
- an injector metering device disposed in said sealed passage, said injector metering device selectively metering compressed gas from said inlet passage to said outlet passage to vaporize the liquid compressed combustible gas into a gas.
6 more elements
A metering apparatus for metering a liquid compressed combustible gas, the metering unit comprising:
- a source of liquid compressed combustible gas;
- a gas powered unit having an exhaust and an air mixing unit;
- a pod with an inlet passage and an outlet passage, a sealed passage in the pod connecting said inlet passage to said outlet passage, wherein said pod is remote from the gas powered unit, a pipe connecting said outlet passage of said pod to the air mixing unit of the powered unit, said inlet passage being connected to the source of compressed liquid combustible gas, and said outlet passage being connected to the gas powered unit for providing gas to the gas powered unit;
- an injector metering device disposed in said sealed passage, said injector metering device selectively metering compressed gas from said inlet passage to said outlet passage to vaporize the liquid compressed combustible gas into a gas;
- an exhaust gas recirculation passage connecting the exhaust to the air mixing unit;
- and
- a unit temperature sensor for sensing a measure reflective of the metering of the gas in the intake manifold;
- and
- means to control the exhaust gas recirculation in response to said unit temperature sensor.
6 more elements
A metering apparatus for metering a liquid compressed combustible gas, the metering unit comprising:
- a source of liquid compressed combustible gas;
- a pas powered unit having an exhaust and an air mixing unit;
- a pod with an inlet passage and an outlet passage, a sealed passage in the pod connecting said inlet passage to said outlet passage, wherein said pod is remote from the gas powered unit, a pipe connecting said outlet passage of said pod to the air mixing unit of the powered unit, said inlet passage being connected to the source of compressed liquid combustible gas, and said outlet passage being connected to the gas powered unit for providing gas to the gas powered unit;
- an injector metering device disposed in said sealed passage, said injector metering device selectively metering compressed gas from said inlet passage to said outlet passage to vaporize the liquid compressed combustible gas into a gas;
- an exhaust gas recirculation passage connecting the exhaust to the air mixing unit;
- a temperature sensor for sensing a temperature of said outlet passage and generating a sensed temperature output signal;
- and
- a heater connected to said outlet passage and receiving said sensed temperature output signal from said temperature sensor, said heater providing heat to said outlet passage to control said controllable parameter in response to said sensed temperature output signal.
5 more elements
A metering apparatus for metering a compressed combustible gas, the metering unit comprising:
- a source of liquid compressed combustible gas;
- a gas powered unit having an exhaust, an intake, and an air mixing unit;
- a pod with an inlet passage and an outlet passage, a sealed passage in the pod connecting said inlet passage to said outlet passage, said pod being remote from the gas powered unit, a pipe connecting said outlet passage of said pod to the air mixing unit of the powered unit, said inlet passage connected to the source of compressed combustible gas, and said outlet passage connected to the gas powered unit for providing gas to the gas powered unit;
- an injector metering device disposed in said sealed passage, said injector metering device selectively metering compressed gas from said inlet passage to said outlet passage to vaporize any left over liquid compressed combustible gas into a gas;
- an electric heater connected to said pod;
- a thermal switch connected to said pod, said thermal switch selectively operating said electric heater to heat the gas;
- an exhaust gas recirculation passage extending between the exhaust and the intake to provide for exhaust gas recirculation;
- a unit temperature sensor for sensing a measure reflective of the metering of the gas in the intake manifold;
- and
- means to control the amounts of exhaust gas recirculation in response to said unit temperature sensor.
7 more elements
A metering apparatus for a compressed combustible gas, comprising:
- a source of compressed combustible gas;
- a gas powered unit;
- a pod with an inlet passage and an outlet passage, a sealed passage in the pod connecting said inlet passage to said outlet passage, said pod being remote from the gas powered unit, a pipe connecting said outlet passage of said pod to the air mixing unit of the powered unit, said inlet passage being connected to the source of compressed combustible gas, and said outlet passage being connected to the gas powered unit for providing gas to the gas powered unit;
- an injector metering device disposed in said sealed passage, said injector metering device selectively metering compressed gas from said inlet passage to said outlet passage to vaporize any left over liquid compressed combustible gas into a gas;
- an electric heater connected to said outlet passage of said pod;
- a thermal switch connected to said pod, said thermal switch selectively operating said electric heater to heat the gas in said outlet passage;
- and
- a pipe connecting said outlet passage of said pod to the powered unit.
5 more elements
Dependencies are inferred from the claim text.