Fuel tank sloshing sound test method
A test method and fuel tank technology, which are applied in vehicle testing, machine/structural component testing, measuring devices, etc., can solve the problem of not being able to simulate the sloshing sound of the fuel tank completely, so as to ensure scientificity and increase safety. , the effect of good correlation
Inactive Publication Date: 2019-06-21
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology
It only meets the requirements of the fixing method of the fuel tank. Since the test is carried out separately on the outside of the vehicle, it cannot completely simulate all the sloshing sounds generated by the fuel tank in actual working conditions.
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[0023] The present invention will be described in detail below in conjunction with the drawings.
[0024] See image 3 , The fuel tank sloshing sound test method shown, which includes the following steps:
[0025] Step 1: See figure 1 with figure 2 Firstly, the fuel tank 1 is fixed in the compartment 7 of the vehicle through a tooling. The tooling includes a mounting bracket 2 and two straps 3. The mounting bracket 2 is fixed in the compartment 7, and the top surface of the mounting bracket is the fuel tank fixing surface. The fuel tank 1 is fixed on the fuel tank fixing surface of the mounting bracket 2 by two straps 3. Fixing with tooling makes the fixing method of the tested fuel tank 1 the same as when the fuel tank is assembled on the whole vehicle, so that the test state of the fuel tank 1 is highly correlated with the actual working state, and the corresponding test data is more reference value. Then add water into the fuel tank 1, and the amount of water added is 25% of...
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The invention discloses a fuel tank sloshing sound test method. The method comprises the following steps that step1, a fuel tank is fixed in a compartment of a vehicle through a tooling, a fixing modeis the same with the mode of assembling the fuel tank on the whole vehicle, and a replacement liquid is added in the fuel tank; step2, a vibration sensor and microphones are installed, the vibrationsensor is arranged on the surface of the fuel tank, there are two microphones which are arranged in front of and above the fuel tank, and the vibration sensor and the microphones output signals to a data acquisition analyzer; and step3, the vehicle is started, smoothly runs to a starting point of a brake section, starts braking, stops at the end point of the brake section, the data acquisition analyzer analyzes and processes the collected signal, a vibration signal is used as a reference, a loudness curve is obtained from a sound pressure signal, and a fuel tank sloshing sound level is judgedthrough the loudness curve. All the sloshing sounds of the fuel tank, which are generated in an actual working condition, can be realistically simulated, and a noise level of the fuel tank during a braking process can be accurately measured.
Description
Technical field [0001] The invention relates to the detection of a fuel tank, in particular to a method for testing the sloshing sound of a fuel tank. Background technique [0002] In view of the current requirements for the noise control of the fuel tank assembly in the automotive development process, the OEM needs to test the noise of the fuel tank assembly. [0003] CN103454056B discloses a simulated brake test bench for fuel tank noise testing. A sloping frame with adjustable tilt angle is arranged above the base, a sliding trolley that can slide along the sloping frame is provided on the inclined frame, and a microphone bracket is fixed around the sliding trolley. A fuel tank is fixed on the upper plane of the taxi, and a number of microphones are fixed on the microphone bracket. Each microphone is distributed around the fuel tank except the bottom surface and the distance from the fuel tank surface is equal; the lower half of the inclined frame is equipped with a pair of taxi...
Claims
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Login to View More IPC IPC(8): G01H11/06G01M17/007
Inventor 张兴妍刘刚陈文俊杨少波邵俊龙
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD