Method for testing constant speed ratio performance of hydraulic torque converter
A hydraulic torque converter and test method technology, applied in the direction of machine gear/transmission mechanism testing, etc., can solve problems such as unsatisfactory torque constant and input torque reduction, and achieve the effect of avoiding errors
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Embodiment 1
[0021] This embodiment discloses a performance test method for a constant speed ratio of a hydraulic torque converter. Testing a hydraulic torque converter in the prior art includes the following steps:
[0022] 1) Determine the test input torque T b , the test torque should be able to reflect the input torque range of the hydraulic torque converter under test. The maximum test torque is determined by 100% of the net torque of the matching power machine calibration condition, and part of the test torque is determined by 75% or 50% of the maximum test torque. % and 25% determined, in this example, the test input torque T b Take 100Nm.
[0023] 2) Fix the hydraulic torque converter to be tested on the test bench, and carry out the constant torque test. The constant torque test includes the following steps:
[0024] 2.1) The power is input by the pump wheel shaft and output by the turbine shaft;
[0025] 2.2) Keep the output speed at zero or close to zero, increase the input s...
Embodiment 2
[0034] This embodiment provides a relatively basic implementation method, a method for testing the constant speed ratio performance of a hydraulic torque converter, testing a hydraulic torque converter in the prior art, including the following steps:
[0035] 1) Determine the test input torque T b , the test torque should be able to reflect the input torque range of the hydraulic torque converter under test. The maximum test torque is determined by 100% of the net torque of the matching power machine calibration condition, and part of the test torque is determined by 75% or 50% of the maximum test torque. % and 25% determined, in this example, the test input torque T b Take 100Nm.
[0036] 2) Fix the hydraulic torque converter to be tested on the test bench, and complete a constant torque test.
[0037] 3) Determine the ratio speed ratio i of the output speed to the input speed to be tested, i=0,0.05,0.1,0.15,0.2,0.25,0.3,0.35,0.4,0.45,0.5,0.55,0.6,0.65,0.7, 0.75, 0.8, 0.85, ...
Embodiment 3
[0045] The main steps of the present embodiment are the same as in Example 2, and further, in step 2), the constant torque test comprises the following steps:
[0046] 2.1) The power is input by the pump wheel shaft and output by the turbine shaft;
[0047] 2.2) Keep the output speed at zero or close to zero, increase the input speed to the input torque value T specified in the test b , and then increase the output speed step by step according to the set increment until the predetermined value, and then gradually reduce the output speed to zero or close to zero with the same increment, and keep the input torque T during the whole test process b remain unchanged until a test is completed.
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