Evaporative Emission Control System Monitoring
First Claim
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1. A monitoring sub-system coupled to an evaporative emission canister fluidically coupled to a fuel tank and an engine, comprising:
- a temperature sensor positioned to measure temperature within the evaporative emission canister; and
a module coupled to receive sensory output from the temperature sensor and configured to determine a sorption capacity of the evaporative emission canister based on the received sensory output.
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Abstract
A monitoring sub-system coupled to an evaporative emission canister fluidically coupled to a fuel tank and an engine of a machine includes one or more temperature sensors and a control module coupled to receive sensory output from the temperature sensors. The temperature sensors measure temperature within the evaporative emission canister. The control module is configured to monitor a sorption capacity of the evaporative emission canister based on the received sensory output.
15 Citations
21 Claims
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1. A monitoring sub-system coupled to an evaporative emission canister fluidically coupled to a fuel tank and an engine, comprising:
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a temperature sensor positioned to measure temperature within the evaporative emission canister; and a module coupled to receive sensory output from the temperature sensor and configured to determine a sorption capacity of the evaporative emission canister based on the received sensory output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of monitoring an evaporative emission canister fluidically coupled to a fuel tank and an engine, the method comprising:
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receiving a measurement of a temperature within the evaporative emission canister; and determining a sorption capacity of the evaporative emission canister based on a change in temperature of the evaporative emission canister as fuel vapors are loaded or purged from the evaporative emission canister. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A monitoring sub-system coupled to an evaporative emission canister, comprising:
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a sensor responsive to changes in temperature within the evaporative emission canister; and a module configured to monitor whether the evaporative emission canister is malfunctioning based on sensory output received from the sensor. - View Dependent Claims (20, 21)
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Specification