Method for measuring fuel consumption with carbon balancing method

A carbon balance and fuel consumption technology, applied in measurement devices, relative volume flow measurement, liquid/fluid solid measurement, etc., to reduce calculation errors, shorten detection time, and ensure accuracy

Inactive Publication Date: 2013-10-16
佛山分析仪有限公司
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Problems solved by technology

[0011] However, this method ignores the influence of pollutants in the diluted air. When using it to calculate the dilution factor, in the working condition of the excess air factor of the engine greater than 1, the excess part The air becomes dilution air in the exhaust pipe of the engine, which dilutes the combustion products, causing the calculation result to be greater than the actual value

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  • Method for measuring fuel consumption with carbon balancing method
  • Method for measuring fuel consumption with carbon balancing method
  • Method for measuring fuel consumption with carbon balancing method

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Embodiment Construction

[0061] The method for measuring fuel consumption by carbon balance method of the present invention comprises the following steps:

[0062] (1) Put the sampling tube of the carbon balance fuel consumption meter close to and aim at the exhaust pipe of the motor vehicle, and extract all the exhaust gas of the motor vehicle and the air participating in the dilution;

[0063] (2) The gas concentration measuring device, temperature measuring device, pressure measuring device and flow measuring device of the carbon balance fuel consumption meter respectively measure the concentration of the diluted motor vehicle exhaust (CO 2 , CO, HC, etc.), temperature, pressure, flow;

[0064](3) Combine the flow data of the diluted exhaust gas measured by the carbon balance fuel consumption meter with the temperature data and pressure data, and convert it into the diluted exhaust gas flow rate under the standard state (Q n );

[0065] (4) The concentration data (CO 2 , CO, HC, etc.) for backgr...

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Abstract

The invention discloses a method for measuring fuel consumption with a carbon balancing method. The dilution coefficient calculation of the method includes the following steps that firstly, a fuel burning model is built, a complete burning mathematical module is built considering all gas compositions in the air, and the concentration of all burnt resultants is obtained according to the law of conservation of mass; secondly, calculation of the stoichiometric coefficient in three extreme situations that C in fuel is completely converted into CO2, C in the fuel is completely converted into CO and C in the fuel is not burned completely so as to generate HC is considered; finally, the model is modified and the modified value of the dilution coefficient is obtained when CO2 exists in the resultants and CO and HC which are generated after incomplete burning are also generated. Influences caused by diluting pollutants in the air can be eliminated, and authenticity of emission data is ensured.

Description

technical field [0001] The invention relates to the detection of fuel economy of motor vehicles, in particular to a method for measuring fuel consumption by using a carbon balance method. Background technique , [0002] Since the 1970s, foreign countries began to use the carbon balance method to measure the fuel economy of light vehicles. The carbon balance method can realize fuel economy (referred to as "fuel consumption") detection without disintegration, and the detection operation is simple and fast, especially in today's energy-saving, environmental protection, and low-carbon, it has been vigorously promoted. [0003] The carbon balance method is a method of calculating the fuel consumption of a vehicle based on the law of conservation of carbon mass, that is, after the fuel is burned in the engine, the sum of the carbon mass in the exhaust is equal to the sum of the carbon mass before the fuel is burned. Fuel oil is a mixture of HC compounds as the main component, an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F9/00
Inventor 何桂华
Owner 佛山分析仪有限公司
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