Intake manifold performance detection device and detection method
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A technology of intake manifold and detection device, which is applied in the field of intake manifold performance detection device and intake manifold performance detection, which can solve the problem of traceability, increase the difficulty of research and development and detection of intake manifold, and the fluctuation of detection value Larger issues
Active Publication Date: 2013-12-11
GREAT WALL MOTOR CO LTD
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However, for the detection of the performance of the intake manifold, at this stage, CFD analysis is only carried out theoretically, and there is no method for testing and testing the intake manifold entity alone.
[0004] Theoretical CFD analysis on the performance of the intake manifold has unavoidable drawbacks because it cannot be tested whether the entity of the intake manifold is completely consistent with the digital model.
For example, when performing CFD analysis on the intake manifold, it is assumed that each branch of the intake manifold has the same effect on the gas flow of each cylinder, but the actual processed inta
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Embodiment 1
[0033] This embodiment relates to an intake manifold performance detection device, which consists of Figure 1 to Figure 3 As shown, it includes a plenum chamber 1, a manifold connecting plate 5 arranged on the upper surface of the plenum chamber 1, and an air outlet pipe 7 arranged on the lower surface of the plenum chamber 1, which is connected to the plenum chamber 1 in the air outlet pipe 7 A vortex generator 8 is arranged at the place, a vacuum blower 9 is connected to the end of the outlet pipe 7, a valve 10 for controlling the opening and closing of the outlet pipe 7 is arranged on the outlet pipe 7 near the vacuum fan 9, and a valve 10 for controlling the opening and closing of the outlet pipe 7 is arranged on the outlet pipe 7. A vortex flow meter 11 and a flow meter 12 for detecting the gas in the gas outlet pipe 7 are also provided on the plenum chamber 1 with a vacuum gauge 13 for detecting the internal vacuum degree.
[0034] The structure of the manifold connecti...
Embodiment 2
[0038] This embodiment relates to a method for detecting the performance of an intake manifold, which includes the following steps:
[0039] Step a, make all the control valves 6 rotate to the closed state, turn on the vacuum fan 9 to evacuate the plenum chamber 1, when the vacuum gauge 13 shows that the vacuum degree reaches 10KPa, close the valve 10, and let it stand for a period of time to test the plenum chamber 1 tightness;
[0040] Step 1, one of the control valves 6 is opened, so that the air flow in the intake manifold branch corresponding to the control valve 6 enters the plenum chamber 1;
[0041] Step 2, when the airflow in the plenum chamber 1 is discharged from the air outlet pipe 7, the vortex generator 8 converts the airflow into a vortex;
[0042] Step 3, through the vortex flow meter 11 and the flow meter 12, the degree and flow rate of the vortex formed in the air outlet pipe 7 are detected respectively;
[0043] Step 4, repeat steps 1 to 3 to complete the ...
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Abstract
The invention relates to an intake manifold performance detection device and detection method. The intake manifold performance detection device comprises a pressure stabilizing cavity with the inner portion being provided with a hollow cavity and a manifold connecting plate which is fixedly arranged outside the pressure stabilizing cavity. The manifold connecting plate is provided with connecting holes which are connected with an intake manifold and are communicated with the hollow cavity. The manifold connecting plate is provided with control valves which conduct opening and closing control over the connecting holes and an air outlet pipe which is fixedly arranged outside the pressure stabilizing cavity and is communicated with the hollow cavity. A vortex generating device, a vortex momentum gage, a flow gage and a gas exhausting device are arranged inside the air outlet pipe, wherein the vortex generating device converts gas flowing out of the pressure stabilizing cavity into vortexes, the vortex momentum gage and the flow gage are used for detecting the intensity and the flow of the vortexes respectively, and the gas exhausting device is fixedly connected at the free end of the air outlet pipe. By means of the intake manifold performance detection device, the influence of various branch pipes of the intake manifold on airflow of cylinders can be detected, theoretical analysis and actual tests of the intake manifold are combined, and therefore reasonable and accurate evaluation can be achieved for the performance of the intake manifold.
Description
technical field [0001] The invention relates to a detection device, in particular to a performance detection device of an intake manifold, and also relates to a performance detection method of an intake manifold. Background technique [0002] The airflow movement in the gasoline engine cylinder has an important influence on the combustion process of the engine, especially the structure of the flow field in the cylinder at the end of the intake air, which will directly determine the turbulence intensity, airflow velocity near the spark plug at the ignition moment, and the distribution of fuel in the cylinder, thus It affects the power, economy and emission of the engine, which puts forward requirements on the performance parameters of the intake port and intake manifold. [0003] At present, there are mainly two methods for testing the performance of the air inlet, the steady state test using the air passage steady flow test bench, and the CFD digital-analog analysis. Howeve...
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