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Diesel engine nozzle blockage simulation testing method and device

A diesel engine and simulation test technology, which is applied in the direction of engine testing, internal combustion engine testing, machine/structural component testing, etc., can solve the problems that diesel cannot be used, and achieve the effect of shortening test time and high test repeatability

Pending Publication Date: 2018-05-29
珠海莱科力环保科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

The above tests have proved that the method and equipment of the original invention can no longer be applied to evaluate diesel oil containing cetane number improvers

Method used

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  • Diesel engine nozzle blockage simulation testing method and device
  • Diesel engine nozzle blockage simulation testing method and device
  • Diesel engine nozzle blockage simulation testing method and device

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Embodiment Construction

[0035] The diesel engine nozzle clogging simulation test method and equipment of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] Such as figure 1 As shown, in the embodiment of the diesel engine nozzle clogging simulation test equipment provided by the present invention, the metal capillary 2 passes through the metal bath 1, and the two ends of the metal capillary 2 are respectively the inlet and the outlet of the metal capillary 2, and the inlet and the outlet are all controlled by The quick twist joint 5 is connected and sealed, and the temperature of the metal bath 1 is controlled by the control device 6 .

[0037] In this embodiment, the metal capillary 2 has a total length of 200 mm, and the first 2 / 3 section is an inner hole with a diameter of about 1 mm, and the rear 1 / 3 section has an aperture that is reduced by half to form a narrow mouth. The pore size is small, and there is a c...

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Abstract

The invention relates to a diesel engine nozzle blockage simulation testing method and device. The method comprises the following steps that 1, a metal capillary tube penetrates through a metal bath;2, the temperature of the metal bath is set to be 40-60 DEG C, the temperature is kept constant, air is exhausted to the metal capillary tube at the constant exhaust pressure, and a flow value obtained before a test is measured; 3, the metal bath is heated to the test temperature, and the temperature is kept constant; 4, under the drive of inert gas, a micro amount of diesel oil is injected into the metal capillary tube intermittently at the certain frequency; 5, after the test is ended, the metal bath is cooled to temperature the same as that in the step 2, air is exhausted to the metal capillary tube at the same exhaust pressure as that in the step 2, and a flow value obtained after the test is measured; 6, the flow value obtained after the test is subtracted from the flow value obtainedbefore the test, and the flow value obtained before the test is divided by the difference to obtain the diesel blockage rate in the metal capillary tube. The device is used for implementing the method, the testing method and device are similar to the diesel engine nozzle working principle, and the testing method and device are applicable to diesel with the level being national standard V or above.

Description

technical field [0001] The invention belongs to the technical field of performance detection of petrochemical products, in particular to a simulated detection method and equipment for the detergency of diesel oil. Background technique [0002] With the increase in the number of motor vehicles in our country, the smog caused by motor vehicle exhaust emissions has attracted more and more attention, especially in the case of poor maintenance of diesel vehicles, it is easy to generate carbon deposits in the nozzles, causing the engine nozzles to be blocked. Diesel atomization is not good, fuel consumption increases, power decreases, particulate matter emissions increase and black smoke. In order to solve this problem, the commonly used method at home and abroad is to add diesel detergent to diesel, so that the nozzles will generate less or no carbon deposits, and reduce the pollution caused by diesel vehicles to the environment. The existing method for evaluating diesel deterge...

Claims

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Application Information

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IPC IPC(8): G01M15/04
CPCG01M15/042
Inventor 张佳张德民李荣
Owner 珠海莱科力环保科技有限公司
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