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2 results about "Hydrocarbon emission" patented technology
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Hydrocarbon Emissions. Motor vehicle fuel contains hydrocarbons, which are its primary source of energy. Any hydrocarbons emitted from a vehicle indicate unused fuel, which results from incomplete fuel combustion. Emissions are measured in parts per million, or ppm, and a higher release of hydrocarbons from a vehicle can cause a failed smog test.
Mass airflow sensor and hydrocarbon trap combination
A combined mass airflow sensor and hydrocarbon trap is provided for absorbing evaporative hydrocarbon emissions from an air intake duct of an internal combustion engine. The combined mass airflow sensor and hydrocarbon trap comprises a duct that supports a hydrocarbon absorbing sheet in an unfolded configuration within a housing. The duct communicates an airstream from an air filter to the air intake duct during operation of the internal combustion engine. An opening in the housing receives a mass airflow sensor into the duct, such that the mass airflow sensor is disposed within the airstream. Guide vanes extending across the duct reduce air turbulence within the airstream passing by the mass airflow sensor. Ports disposed along the duct allow the evaporative hydrocarbon emissions to be drawn into the interior and arrested by the hydrocarbon absorbing sheet when the internal combustion engine is not operating.
Owner:K&N ENGINEERING INC
Hydrocarbon quality test method, methanol fuel automobile carbon canister emission test method
PendingCN122109272AMaterial analysis by electric/magnetic meansMaterial analysis by optical meansHydrocotyle bowlesioidesMethanol fuel
The present application relates to the technical field of automobile emission detection, and particularly relates to a hydrocarbon mass testing method and a methanol fuel automobile carbon canister emission testing method. The present application connects the atmospheric port of the carbon canister to a micro closed chamber, continuously measures the total hydrocarbon in the closed chamber using FID, and synchronously measures the methanol concentration in the same gas using FTIR. Based on the measurement results of FID and FTIR, the signal separation of non-methanol hydrocarbons and methanol is realized, the problem that the FID response is inaccurate and the alcohol and hydrocarbon emissions cannot be distinguished in the prior art is solved, and the accuracy and reliability of the methanol fuel automobile evaporation pollutant emission testing are improved.
Owner:CHINA AUTOMOTIVE ENG RES INST