초록 ▼

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.

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.

대표청구항 ▼

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.

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. he drag motor, comparing the output torque to the set-point torque, adjusting the input torque, repeating the steps of measuring the output torque at the second motor, comparing the output torque to the set-point torque, and adjusting the input torque until the output torque matches the set-point torque value, and collecting test data. ning an amount of oxygen supplied to said second catalyst; and determining degradation of said second exhaust gas sensor based on said amount of oxygen supplied to said second catalyst and said second signal. 6. The method of claim 2 wherein said engine includes a second cylinder bank coupled to a second catalyst, and a second exhaust gas sensor coupled downstream of said second catalyst generating a second signal, said method further comprising: determining degradation of said second exhaust gas sensor based on said amount of oxygen supplied to said first catalyst and said second signal. 7. The method of claim 1 further including indicating when to monitor said first exhaust gas sensor for degradation. 8. The method of claim 1 wherein said engine includes a first cylinder bank coupled said first catalyst and a second cylinder bank coupled to a second catalyst, wherein said one of said catalysts comprises said second catalyst. 9. The method of claim 8 wherein said step of determining an amount of oxygen supplied to said second catalyst includes: supplying an air-fuel mixture that is on average rich of stoichiometry to said first and second cylinder banks to remove oxygen stored in said first and second catalysts, respectively, supplying an air-fuel mixture that is on average lean of stoichiometry to said first and second cylinder banks; and calculating said amount of oxygen supplied to said second catalyst based on an amount of said average lean air-fuel mixture supplied to said second cylinder bank. 10. The method of claim 8 wherein said step of determining degradation of said first exhaust gas sensor includes: comparing said amount of oxygen supplied to said second catalyst to a predetermined oxygen amount; and indicating said first exhaust gas sensor is degraded when said amount of oxygen supplied to said second catalyst is greater that said predetermined oxygen amount and said first signal does not indicate an air-fuel ratio lean of stoichiometry. 11. The method of claim 8 further including indicating when to monitor said first exhaust gas sensor for degradation. 12. A system for determining degradation of an exhaust gas sensor utilized in an engine, said engine coupled to first and second catalysts, said system comprising: a first exhaust gas sensor coupled downstream of said first catalyst generating a first signal; and a controller operably coupled to said first exhaust gas sensor, said controller configured to determine an amount of oxygen supplied to one of said first and second catalysts, said controller further configured to determine degradation of said first exhaust gas sensor based on said amount of supplied oxygen and said first signal. 13. The system of claim 12 wherein said first catalyst comprises a three-way catalytic converter. 14. The system of claim 12 wherein said controller is further configured to indicate when to monitor said first exhaust gas sensor for degradation. 15. The system of claim 12 wherein said controller is further configured to compare said amount of oxygen supplied to said first catalyst to a predetermined oxygen amount, and to indicate said first exhaust gas sensor is degraded when said amount of oxygen supplied to said first catalyst is greater than said predetermined oxygen amount and said first signal does not indicate an air-fuel ratio lean of stoichiometry. 16. The system of claim 12 wherein said controller is further configured to compare said amount of oxygen supplied to said second catalyst to a predetermined oxygen amount, and to indicate said first exhaust gas sensor is degraded when said amount of oxygen supplied to said second catalyst is greater than said predetermined oxygen amount and said first signal does not indicate an air-fuel ratio lean of stoichiometry. utput g of the response delay compensation element is input to the intake air system model. A transfer function of the phase advance compensation is g=(1+T1·s)/(1+T2·s)·gMAF where T1and T2are time constant of the phase advance compensation, which is set based on at least one of the output gMAFof the airflow meter, engine speed, an intake air pressure, and a throttle angle. The model time constant τIMof the intake air system model is calculated by variables including volumetric efficiency and the engine speed. The volumetric efficiency is calculated by two-dimensional map having the engine speed and the intake air pressure as parameters thereof. tained by performing at least one ellipsometric measurement on a film formed on a substrate, said substrate being located in a pressurizable chamber filled with a gaseous substance at a pressure less than an equilibrium vapor pressure of said gaseous substance, said data relating to the film thickness as a function of said pressure; computing Young's modulus of said film from said data; and outputting said computed Young's modulus of said film. 5. A method for determining pore size distribution of a film formed on a substrate using a gaseous substance, said substrate being within a pressurizable chamber at a chamber temperature, said method comprising the steps of: setting said chamber to a modified pressure, the modified pressure being less than equilibrium vapor pressure of said gaseous substance at the chamber temperature; admitting a gaseous substance in said chamber; performing at least one ellipsometric measurement to determine optical characteristics at said modified pressure and at said chamber temperature; and calculating said pore size distribution of said film. 6. A method for determining the presence of pore-killers in a film formed on a substrate, said substrate being within a pressurizable chamber at a chamber temperature filled with a gaseous substance said method comprising the steps of: performing at least one ellipsometric measurement at a pressure being less than equilibrium vapor pressure of said gaseous substance at the chamber pressure to determine data relating to the refractive index and thickness of said film; and determining whether pore-killers are present in said film based on said data. 7. A method as claimed in claim 6, further comprising the step of: accepting or rejecting the film based on said presence of said pore-killers, wherein the step of accepting or rejecting performs quality testing of the film. 8. A method as claimed in claim 6, wherein said film is produced based on parameters for a film production process, and further comprising the step of changing the parameters of said film production process based on said presence of said pore-killers. wherein said step of changing the parameters performs on-line process control on the film production process. 9. A program storage device readable by a machine and encoding a program of instructions for executing a method comprising the steps of: loading data, said data obtained by performing at least one ellipsometric measurement on a film, formed on a substrate, said substrate being located in a pressurizable chamber filled with a gaseous substance at a pressure being less than an equilibrium vapor pressure of said gaseous substance, said data relating to the film thickness and refractive index; determining whether pore-killers are present in said film based on said data; and displaying a result of said determining step. 10. A method for determining the amount of pores of at least two different sizes of a film formed on a substrate using a gaseous substance, said substrate being within a pressurizable chamber at a chamber temperature, said method comprising the steps of: setting said chamber to a modified pressure, the modified pressure being less than equilibrium vapor pressure of said gaseous substance at the chamber temperature; admitting a gaseous substance in said chamber; performing at least one ellipsometric measurement to determine optical characteristics at said modified pressure and at said chamber temperature; and calculating said amount of pores of at least two different sizes of said film.