6 results about "Hydrocarbon emission" patented technology

A system and methods are provided for a hydrocarbon absorbing air filter system to arrests evaporative hydrocarbon emissions from an intake duct of an internal combustion engine. The system comprises an air filter box that includes an air inlet to an air filter disposed inside the air filter box. A hydrocarbon trap outside the air filter box and in fluid communication with the air filter absorbs evaporative hydrocarbon emissions leaking from the air intake duct when the engine is not operating. The hydrocarbon trap includes an outer housing that couples with an inner housing and a hydrocarbon absorbing pad within an interior between the outer and inner housings. Ports in the inner housing allow hydrocarbon emissions to be arrested by the hydrocarbon absorbing pad. A conduit extends from the hydrocarbon trap to the air intake duct of the internal combustion engine.

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.

The present disclosure relates to hydrocarbon emission control systems. More specifically, the present disclosure relates to substrates coated with hydrocarbon adsorptive coating compositions and evaporative emission control systems for controlling evaporative emissions of hydrocarbons from motor vehicle engines and fuel systems.

The invention provides an iron-based binding agent honing abrasive bar. The iron-based binding agent honing abrasive bar is composed of the following raw materials of, by mass, 40%-60% of iron powder, 10%-30% of copper powder, 3%-15% of tin powder, 2%-15% of nickel powder, 1%-10% of tungsten carbide powder, 0.1%-5% of cerium oxide, 0.5%-5% of additives and the balance cubic boron nitride. The formula of the binding agent with the iron powder as the main body is adopted, the defects that an existing copper-based binding agent abrasive bar is short in service life and high in cost are overcome, and the honing abrasive bar has the advantages of being long in service life, good in machining quality and low in cost. The iron powder is non-toxic, and the binding agent with the iron powder as the main body can protect the health of a sand bar maker to the maximum extent. The iron-based binding agent honing abrasive strip can improve the qualified rate of reticulate patterns of a cylinder sleeve, optimize the oil storage and lubrication functions, reduce the risk of cylinder scoring and prolong the service life of an engine. Meanwhile, the phenomenon of engine oil burning can be reduced through the good reticulate patterns, emission of particulate matter and hydrocarbon is reduced, and then the environment is protected.

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.

A system and methods are provided for a hydrocarbon absorbing air filter system to arrests evaporative hydrocarbon emissions from an intake duct of an internal combustion engine. The system comprises an air filter box that includes an air inlet to an air filter disposed inside the air filter box. A hydrocarbon trap outside the air filter box and in fluid communication with the air filter absorbs evaporative hydrocarbon emissions leaking from the air intake duct when the engine is not operating. The hydrocarbon trap includes an outer housing that couples with an inner housing and a hydrocarbon absorbing pad within an interior between the outer and inner housings. Ports in the inner housing allow hydrocarbon emissions to be arrested by the hydrocarbon absorbing pad. A conduit extends from the hydrocarbon trap to the air intake duct of the internal combustion engine.