CN102323064A - Automatic transmission oil pump monomer reliability testing method - Google Patents
Automatic transmission oil pump monomer reliability testing method Download PDFInfo
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- CN102323064A CN102323064A CN201110143535A CN201110143535A CN102323064A CN 102323064 A CN102323064 A CN 102323064A CN 201110143535 A CN201110143535 A CN 201110143535A CN 201110143535 A CN201110143535 A CN 201110143535A CN 102323064 A CN102323064 A CN 102323064A
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Abstract
The invention relates to an automatic transmission oil pump monomer reliability testing method. The method comprises the following steps of: (1) simulating full throttle acceleration and sliding deceleration of the vehicle and adding to a manual gear shifting process; (2) simulating 10-20% of throttle state of the vehicle and accelerating the vehicle to a certain speed; and then accelerating the vehicle by fully opening the throttle; and finally loosening the throttle for deceleration; and (3) simulating the 45-60% of throttle state of the vehicle and accelerating the vehicle to a certain speed; and then fully loosening the throttle and fully opening the throttle for urgent acceleration so that the gear of the transmission rises and falls in sequence or jumping way; and finally, loosening the throttle for deceleration, wherein the first step is repeated for 3000 times, the second step is repeated for 1500 times, the third step is repeated for 3000 times and the three steps are alternately carried out according to a certain sequence in the whole testing process according to the frequencies of the three steps in the real vehicle state and the vehicle durability testing method. The automatic transmission oil pump monomer reliability testing method provided by the invention has the advantages of reasonable design, lower comprehensive cost and relatively reduced period; the oil pump bursting flow is monitored in the testing process and the oil pump is decomposed and detected after the testing is finished.
Description
Technical field
The present invention relates to a kind of test method of ATF pump monomer reliability examination.
Background technology
At present, because China's automatic transmission is started late, the test standard that the automatic transmission assembly is relevant with the monomer parts does not almost have.Do not include the relevant durable wire examination method of ATF pump in version " car gage compilation " in 2010.Through retrieval, all there is not the correlation test wire examination method both at home and abroad.
Summary of the invention
The objective of the invention is to overcome the weak point that exists in the above-mentioned technology, provide a kind of reasonable in design, the ATF pump monomer reliability test method that integrated cost is lower, the cycle shortens relatively.
In order to achieve the above object, the technical scheme of the present invention's employing is:
(1) long duration test state of cyclic operation
This test method is in order to simulate under the 4 gear transmission real vehicle lift-launch states, to go about 200,000 kilometers, the reliability of transmission oil pump; The formulation of this method is with reference to the durable test method of transmission assembly real vehicle, and for accelerated deterioration, the oil temperature control is at 110-120 ℃ high temperature range during test; It is foundation that the control of oil pump top hole pressure respectively keeps off main oil pressure with variator; Choose the central maximal value of each type and control, 1,2 retaining 1MPa, 3,4 retaining 0.8Mpa; Judge through measuring the oil pump discharge flow whether oil pump performance is normal in the process of the test, concrete process of the test divided for three steps:
The first step: simulation real vehicle full throttle quickens and slides the process of slowing down and adding manual shift,
From 700-800 rev/min of beginning of neutral idling mode, variator changes to 1 retaining, and shift process continues 3 seconds, keeps the idling mode 1s time; 100% accelerator open degree quickens, and variator is kept 1 retaining state, uses the 4-8s time, and input speed is elevated to 6200-6600 rev/min from 700-800 rev/min; Variator changes to 2 retainings, and shift process continues 3 seconds, and input speed is reduced to 3700-4100 rev/min from 6200-6600 rev/min, and variator is kept 2 retaining states; Use the 5-9s time, input speed is elevated to 6000-6400 rev/min from 3700-4100 rev/min, and variator changes to 3 retainings, and shift process continues 2 seconds; Input speed is reduced to 4100-4500 rev/min from 6000-6400 rev/min, and variator is kept 3 retaining states, uses the 22-26s time, and input speed is elevated to 6100-6500 rev/min from 4100-4500 rev/min; Variator changes to 4 retainings, and shift process continues 2 seconds, and input speed is reduced to 4500-4900 rev/min from 6100-6500 rev/min, keeps this rotating speed 30s time; 0% accelerator open degree slows down, and variator is kept 4 retaining states, uses the 7-11s time, and input speed is reduced to 4100-4500 rev/min from 4500-4900 rev/min; Variator changes to 3 retainings, and shift process continues 2 seconds, and input speed is elevated to 5600-6000 rev/min from 4100-4500 rev/min, and variator is kept 3 retaining states; Use the 11-15s time, input speed is reduced to 3800-4200 rev/min from 5600-6000 rev/min, and variator changes to 2 retainings, and shift process continues 2 seconds; Input speed is elevated to 5700-6100 rev/min from 3800-4200 rev/min, and variator is kept 2 retaining states, uses the 20.5-24.5s time, and input speed is reduced to 2000-2400 rev/min from 5700-6100 rev/min; Variator changes to 1 retaining, and shift process continues 1 second, and input speed is elevated to 2800-3200 rev/min from 2000-2400 rev/min, and variator is kept 1 retaining state; Use the 1-5s time, be reduced to idling mode 700-800 rev/min from 2800-3200 rev/min, keep the idling mode 3s time; 100% accelerator open degree quickens once more, repeats once according to above step
Second step: simulation real vehicle 10-20% throttle accelerates to certain speed of a motor vehicle, and throttle wide quickens then, the process that last pine tar door slows down,
Since 700-800 rev/min of 1 retaining idling mode, the 10-20% accelerator open degree quickens, and variator is kept 1 retaining state, uses the 3-7s time; Input speed is elevated to 1300-1700 rev/min from 700-800 rev/min, and variator changes to 2 retainings, and shift process continues 2 seconds, and input speed is reduced to 1000-1400 rev/min from 1300-1700 rev/min; Variator is kept 2 retaining states, uses the 5-9s time, and input speed is elevated to 1400-1800 rev/min from 1000-1400 rev/min, and variator changes to 3 retainings; Shift process continues 2 seconds, and input speed is reduced to 1100-1500 rev/min from 1400-1800 rev/min, and 100% accelerator open degree quickens, and variator changes to 1 retaining; Shift process continues 3 seconds, and input speed is elevated to 3800-4200 rev/min from 1100-1500 rev/min, and variator is kept 1 retaining state, uses the 2-6s time; Input speed is elevated to 6200-6600 rev/min from 3800-4200 rev/min, and variator changes to 2 retainings, and shift process continues 3 seconds, and input speed is reduced to 3800-4200 rev/min from 6200-6600 rev/min; Variator is kept 2 retaining states, uses the 1-5s time, and input speed is elevated to 5700-6100 rev/min from 3800-4200 rev/min; 0% accelerator open degree slows down and slams brake, and variator is kept 2 retaining states, uses the 22-26s time; Input speed is reduced to 700-800 rev/min from 5700-6100 rev/min, and variator changes to 1 retaining, and shift process continues 3 seconds; Input speed is elevated to 800-1200 rev/min from 700-800 rev/min, and variator is kept 1 retaining state, uses the 0-4s time; Input speed is reduced to idling mode 700-800 rev/min from 800-1200 rev/min, keeps the idling mode 3s time
The 3rd step: simulation real vehicle 45-60% throttle accelerates to certain speed of a motor vehicle, carries out the full pine tar door and the anxious operation of quickening that gives full throttle then, realizes variator in order or the retaining that jumps, the process that last pine tar door slows down,
Since 700-800 rev/min of 1 retaining idling mode, the 45-60% accelerator open degree quickens, and variator is kept 1 retaining state, uses the 3-7s time; Input speed is elevated to 4800-5200 rev/min from 700-800 rev/min, and variator changes to 2 retainings, and shift process continues 2 seconds, and input speed is reduced to 2800-3200 rev/min from 4800-5200 rev/min; Variator is kept 2 retaining states, uses the 2-6s time, is elevated to 4500-4900 rev/min from 2800-3200 rev/min, and variator changes to 3 retainings; Shift process continues 2 seconds, and input speed is reduced to 3000-3400 rev/min from 4500-4900 rev/min, and variator is kept 3 retaining states, uses the 1.7-5.7s time; Input speed is elevated to 3400-3800 rev/min from 3000-3400 rev/min, and 0% accelerator open degree slows down, and variator changes to 4 retainings, and shift process continues 2 seconds; Input speed is reduced to 2000-2400 rev/min from 3400-3800 rev/min, and variator is kept 4 retaining states, uses the 0-3s time, and input speed is reduced to 1800-2200 rev/min from 2000-2400 rev/min; 100% accelerator open degree quickens, and variator changes to 2 retainings, and shift process continues 4 seconds, and input speed is elevated to 5100-5500 rev/min from 1800-2200 rev/min; Variator is kept 2 retaining states, uses the 1-5s time, and input speed is elevated to 6200-6600 rev/min from 5100-5500 rev/min, and variator changes to 3 retainings; Shift process continues 3 seconds, and input speed is reduced to 4100-4500 rev/min from 6200-6600 rev/min, and variator is kept 3 retaining states, uses the 0-3.5s time; Input speed is elevated to 4300-4700 rev/min from 4100-4500 rev/min, and 0% accelerator open degree slows down, and variator changes to 4 retainings, and shift process continues 2 seconds; Input speed is reduced to 2600-3000 rev/min from 4300-4700 rev/min, keeps this rotating speed 1.5s time, and 100% accelerator open degree quickens, and variator changes to 3 retainings; Shift process continues 2 seconds, and input speed is elevated to 4500-4900 rev/min from 2600-3000 rev/min, and variator is kept 3 retaining states, uses the 24-28s time; Input speed is elevated to 6200-6600 rev/min from 4500-4900 rev/min, and variator changes to 4 retainings, and shift process continues 2 seconds, and input speed is reduced to 4300-4700 rev/min from 6200-6600 rev/min; 0% accelerator open degree slows down, and variator is kept 4 retaining states, uses the 7-11s time, and input speed is reduced to 3800-4200 rev/min from 4300-4700 rev/min; Variator changes to 3 retainings, and shift process continues 3 seconds, and input speed is elevated to 5600-6000 rev/min from 3800-4200 rev/min; Variator is kept 3 retaining states, uses the 23-27s time, and input speed is reduced to 2800-3200 rev/min from 5600-6000 rev/min; Variator gets into on-position, uses the 3-7s time, makes input speed be reduced to 700-800 rev/min of 1 retaining idling mode from 2800-3200 rev/min; The 45-60% accelerator open degree quickens, and repeats once according to above step
Owing to be that the oil pump monomer is examined, therefore only need the change procedure and the rate of change of simulation said process medium speed, and the variation of variator oil pump top hole pressure when hanging into different gear.The frequency that under the real vehicle state, uses according to above 3 steps also combines real vehicle long duration test method, confirms that the first step repeats 6000 times in the entire test, the second step repetition 3000 times, and the 3rd step repetition 6000 times, and three steps were undertaken by the setting sequence alternate,
(2) data acquisition
Oil pump discharge flow under the once following operating mode of per 50 hour records
A) pump speed 600rpm, oil pump top hole pressure 1.1MPa;
B) rotating speed 1000rpm, oil pump top hole pressure 1.6MPa;
C) rotating speed 1500rpm, the oil pump discharge flow under the oil pump top hole pressure 1.6MPa;
D) rotating speed is from 750-6000rpm, and the oil pump top hole pressure is respectively 0.65MPa, 0.85MPa, 1.05MPa, 1.55MPa,
(3) criterion
Oil pump through after the fail-test must satisfy following some requirement
A) oil pump discharge flow rate of descent is in 20%;
B) end clearance requires in the 0.02-0.048mm scope;
C) if cavitation erosion is cavitated the some length surface in 2.0mm, face width is in 1.0mm, and the degree of depth is in 1.0mm.
Advantage of the present invention is:
The present invention is reasonable in design, and test lower, cycle of integrated cost shortens relatively, etc. the aspect advantage; At first all fully simulated assembly and carried state from aspects such as the condition of work of oil pump, mode of operations; And simulation is the most harsh duty, guarantees that the monomer result of appraisal can demonstrate fully the assembly state, and secondly oil pump monomer long duration test consumption of natural resource is less; The examination cost is lower; The cost that relates to that on the oil pump test platform, makes an experiment mainly contains power consumption, equipment amortization, a small amount of fuel consumption, if on the automatic transmission assembly, make an experiment, cost will increase by tens times.Because on the oil pump test platform, stand is monitored curve in real time can fully reflect the testpieces duty, and therefore daily shutdown inspection workload is less, and the project elapsed time such as makes regular check in the process of the test and also reduced, and the bulk testing cycle shortens nearly 1/3.
Embodiment
Describe in further detail in the face of embodiments of the invention down.
Embodiment 1,
(1) long duration test state of cyclic operation
This test method is in order to simulate under the 4 gear transmission real vehicle lift-launch states, to go about 200,000 kilometers, the reliability of transmission oil pump; The formulation of this method is with reference to the durable test method of transmission assembly real vehicle, and for accelerated deterioration, the oil temperature control is at 110 ℃ high temperature range during test; It is foundation that the control of oil pump top hole pressure respectively keeps off main oil pressure with variator; Choose the central maximal value of each type and control, 1,2 retaining 1MPa, 3,4 retaining 0.8Mpa; Judge through measuring the oil pump discharge flow whether oil pump performance is normal in the process of the test, concrete process of the test divided for three steps:
The first step: simulation real vehicle full throttle quickens and slides the process of slowing down and adding manual shift,
From 700 rev/mins of beginnings of neutral idling mode, variator changes to 1 retaining, and shift process continues 3 seconds, keeps the idling mode 1s time; 100% accelerator open degree quickens, and variator is kept 1 retaining state, uses the 4s time, and input speed is elevated to 6200 rev/mins from 700 rev/mins; Variator changes to 2 retainings, and shift process continues 3 seconds, and input speed is reduced to 3700 rev/mins from 6200 rev/mins, and variator is kept 2 retaining states; Use the 5s time, input speed is elevated to 6000 rev/mins from 3700 rev/mins, and variator changes to 3 retainings, and shift process continues 2 seconds; Input speed is reduced to 4100 rev/mins from 6000 rev/mins, and variator is kept 3 retaining states, uses the 22s time, and input speed is elevated to 6100 rev/mins from 4100 rev/mins; Variator changes to 4 retainings, and shift process continues 2 seconds, and input speed is reduced to 4500 rev/mins from 6100 rev/mins, keeps this rotating speed 30s time; 0% accelerator open degree slows down, and variator is kept 4 retaining states, uses the 7s time, and input speed is reduced to 4100 rev/mins from 4500 rev/mins.Variator changes to 3 retainings, and shift process continues 2 seconds, and input speed is elevated to 5600 rev/mins from 4100 rev/mins, and variator is kept 3 retaining states; Use the 11s time, input speed is reduced to 3800 rev/mins from 5600 rev/mins, and variator changes to 2 retainings, and shift process continues 2 seconds; Input speed is elevated to 5700 rev/mins from 3800 rev/mins, and variator is kept 2 retaining states, uses the 20.5s time, and input speed is reduced to 2000 rev/mins from 5700 rev/mins; Variator changes to 1 retaining, and shift process continues 1 second, and input speed is elevated to 2800 rev/mins from 2000 rev/mins, and variator is kept 1 retaining state; Use the 1s time, be reduced to 700 rev/mins of idling modes from 2800 rev/mins, keep the idling mode 3s time; 100% accelerator open degree quickens once more, repeats once according to above step
Second step: simulation real vehicle 10% throttle accelerates to certain speed of a motor vehicle, and throttle wide quickens then, the process that last pine tar door slows down,
Since 700 rev/mins of 1 retaining idling modes, 10% accelerator open degree quickens, and variator is kept 1 retaining state, uses the 3s time; Input speed is elevated to 1300 rev/mins from 700 rev/mins, and variator changes to 2 retainings, and shift process continues 2 seconds, and input speed is reduced to 1000 rev/mins from 1300 rev/mins; Variator is kept 2 retaining states, uses the 5s time, and input speed is elevated to 1400 rev/mins from 1000 rev/mins, and variator changes to 3 retainings; Shift process continues 2 seconds, and input speed is reduced to 1100 rev/mins from 1400 rev/mins, and 100% accelerator open degree quickens, and variator changes to 1 retaining; Shift process continues 3 seconds, and input speed is elevated to 3800 rev/mins from 1100 rev/mins, and variator is kept 1 retaining state, uses the 2s time; Input speed is elevated to 6200 rev/mins from 3800 rev/mins, and variator changes to 2 retainings, and shift process continues 3 seconds, and input speed is reduced to 3800 rev/mins from 6200 rev/mins; Variator is kept 2 retaining states, uses the 1s time, and input speed is elevated to 5700 rev/mins from 3800 rev/mins, and 0% accelerator open degree slows down and also slams brake; Variator is kept 2 retaining states, uses the 22s time, and input speed is reduced to 700 rev/mins from 5700 rev/mins, and variator changes to 1 retaining; Shift process continues 3 seconds, and input speed is elevated to 800 rev/mins from 700 rev/mins, and variator is kept 1 retaining state, uses the 1s time; Input speed is reduced to 700 rev/mins of idling modes from 800 rev/mins, keeps the idling mode 3s time
The 3rd step: simulation real vehicle 45% throttle accelerates to certain speed of a motor vehicle, carries out the full pine tar door and the anxious operation of quickening that gives full throttle then, realizes variator in order or the retaining that jumps, the process that last pine tar door slows down,
Since 700 rev/mins of 1 retaining idling modes, 45% accelerator open degree quickens, and variator is kept 1 retaining state, uses the 3s time, and input speed is elevated to 4800 rev/mins from 700 rev/mins; Variator changes to 2 retainings, and shift process continues 2 seconds, and input speed is reduced to 2800 rev/mins from 4800 rev/mins, and variator is kept 2 retaining states, uses the 2s time; Be elevated to 4500 rev/mins from 2800 rev/mins, variator changes to 3 retainings, and shift process continues 2 seconds, and input speed is reduced to 3000 rev/mins from 4500 rev/mins, and variator is kept 3 retaining states; Use the 1.7s time, input speed is elevated to 3400 rev/mins from 3000 rev/mins, and 0% accelerator open degree slows down, and variator changes to 4 retainings, and shift process continues 2 seconds; Input speed is reduced to 2000 rev/mins from 3400 rev/mins, and variator is kept 4 retaining states, uses the 1s time, and input speed is reduced to 1800 rev/mins from 2000 rev/mins; 100% accelerator open degree quickens, and variator changes to 2 retainings, and shift process continues 4 seconds, and input speed is elevated to 5100-5500 rev/min from 1800 rev/mins; Variator is kept 2 retaining states, uses the 1s time, and input speed is elevated to 6200 rev/mins from 5100-5500 rev/min, and variator changes to 3 retainings; Shift process continues 3 seconds, and input speed is reduced to 4100 rev/mins from 6200 rev/mins, and variator is kept 3 retaining states, uses the 1s time; Input speed is elevated to 4300 rev/mins from 4100 rev/mins, and 0%5 is slowed down by the door aperture, and variator changes to 4 retainings, and shift process continues 2 seconds; Input speed is reduced to 2600 rev/mins from 4300 rev/mins, keeps this rotating speed 1.5s time, and 100% accelerator open degree quickens, and variator changes to 3 retainings; Shift process continues 2 seconds, and input speed is elevated to 4500 rev/mins from 2600 rev/mins, and variator is kept 3 retaining states, uses the 24s time; Input speed is elevated to 6200 rev/mins from 4500 rev/mins, and variator changes to 4 retainings, and shift process continues 2 seconds, and input speed is reduced to 4300 rev/mins from 6200 rev/mins; 0% accelerator open degree slows down, and variator is kept 4 retaining states, uses the 7s time, and input speed is reduced to 3800 rev/mins from 4300 rev/mins; Variator changes to 3 retainings, and shift process continues 3 seconds, and input speed is elevated to 5600 rev/mins from 3800 rev/mins, and variator is kept 3 retaining states; Use the 23s time, input speed is reduced to 2800 rev/mins from 5600 rev/mins, and variator gets into on-position, uses the 3s time; Make input speed be reduced to 1 from 2800 rev/mins and keep off 700 rev/mins of idling modes, 45% accelerator open degree quickens, and repeats once according to above step
Owing to be that the oil pump monomer is examined, therefore only need the change procedure and the rate of change of simulation said process medium speed, and the variation of variator oil pump top hole pressure when hanging into different gear.The frequency that under the real vehicle state, uses according to above 3 steps also combines real vehicle long duration test method, confirms that the first step repeats 6000 times in the entire test, the second step repetition 3000 times, and the 3rd step repetition 6000 times, and three steps were undertaken by the setting sequence alternate,
(2) data acquisition
Oil pump discharge flow under the once following operating mode of per 50 hour records
A) pump speed 600rpm, oil pump top hole pressure 1.1MPa;
B) rotating speed 1000rpm, oil pump top hole pressure 1.6MPa;
C) rotating speed 1500rpm, the oil pump discharge flow under the oil pump top hole pressure 1.6MPa;
D) rotating speed is from 750-6000rpm, and the oil pump top hole pressure is respectively 0.65MPa, 0.85MPa, 1.05MPa, 1.55MPa,
(3) criterion
Oil pump through after the fail-test must satisfy following some requirement
A) oil pump discharge flow rate of descent is in 20%;
B) end clearance requires in the 0.02-0.048mm scope;
C) if cavitation erosion is cavitated the some length surface in 2.0mm, face width is in 1.0mm, and the degree of depth is in 1.0mm.
Embodiment 2,
(1) long duration test state of cyclic operation
This test method is in order to simulate under the 4 gear transmission real vehicle lift-launch states, to go about 200,000 kilometers, the reliability of transmission oil pump; The formulation of this method is with reference to the durable test method of transmission assembly real vehicle, and for accelerated deterioration, the oil temperature control is at 120 ℃ high temperature range during test; It is foundation that the control of oil pump top hole pressure respectively keeps off main oil pressure with variator; Choose the central maximal value of each type and control, 1,2 retaining 1MPa, 3,4 retaining 0.8MPa; Judge through measuring the oil pump discharge flow whether oil pump performance is normal in the process of the test, concrete process of the test divided for three steps:
The first step: simulation real vehicle full throttle quickens and slides the process of slowing down and adding manual shift,
From 800 rev/mins of beginnings of neutral idling mode, variator changes to 1 retaining, and shift process continues 3 seconds, keeps the idling mode 1s time, and 100% accelerator open degree quickens; Variator is kept 1 retaining state, uses the 8s time, and input speed is elevated to 6600 rev/mins from 800 rev/mins, and variator changes to 2 retainings, and shift process continues 3 seconds; Input speed is reduced to 4100 rev/mins from 6600 rev/mins, and variator is kept 2 retaining states, uses the 9s time, and input speed is elevated to 6400 rev/mins from 4100 rev/mins; Variator changes to 3 retainings, and shift process continues 2 seconds, and input speed is reduced to 4500 rev/mins from 6400 rev/mins, and variator is kept 3 retaining states; Use the 26s time, input speed is elevated to 6500 rev/mins from 4500 rev/mins, and variator changes to 4 retainings, and shift process continues 2 seconds; Input speed is reduced to 4900 rev/mins from 6500 rev/mins, keeps this rotating speed 30s time, and 0% accelerator open degree slows down, and variator is kept 4 retaining states; Use the 11s time, input speed is reduced to 4500 rev/mins from 4900 rev/mins, and variator changes to 3 retainings, and shift process continues 2 seconds; Input speed is elevated to 6000 rev/mins from 4500 rev/mins, and variator is kept 3 retaining states, uses the 15s time, and input speed is reduced to 4200 rev/mins from 6000 rev/mins; Variator changes to 2 retainings, and shift process continues 2 seconds, and input speed is elevated to 6100 rev/mins from 4200 rev/mins, and variator is kept 2 retaining states; Use the 24.5s time, input speed is reduced to 2400 rev/mins from 6100 rev/mins, and variator changes to 1 retaining, and shift process continues 1 second; Input speed is elevated to 3200 rev/mins from 2400 rev/mins, and variator is kept 1 retaining state, uses the 5s time, is reduced to 800 rev/mins of idling modes from 3200 rev/mins; Keep the idling mode 3s time, 100% accelerator open degree quickens once more, repeats once according to above step
Second step: simulation real vehicle 20% throttle accelerates to certain speed of a motor vehicle, and throttle wide quickens then, the process that last pine tar door slows down,
Since 800 rev/mins of 1 retaining idling modes, 20% accelerator open degree quickens, and variator is kept 1 retaining state, uses the 7s time; Input speed is elevated to 1700 rev/mins from 800 rev/mins, and variator changes to 2 retainings, and shift process continues 2 seconds, and input speed is reduced to 1400 rev/mins from 1700 rev/mins; Variator is kept 2 retaining states, uses the 9s time, and input speed is elevated to 1800 rev/mins from 1400 rev/mins, and variator changes to 3 retainings; Shift process continues 2 seconds, and input speed is reduced to 1500 rev/mins from 1800 rev/mins, and 100% accelerator open degree quickens, and variator changes to 1 retaining; Shift process continues 3 seconds, and input speed is elevated to 4200 rev/mins from 1500 rev/mins, and variator is kept 1 retaining state, uses the 6s time; Input speed is elevated to 6600 rev/mins from 4200 rev/mins, and variator changes to 2 retainings, and shift process continues 3 seconds, and input speed is reduced to 4200 rev/mins from 6600 rev/mins; Variator is kept 2 retaining states, uses the 5s time, and input speed is elevated to 6100 rev/mins from 4200 rev/mins, and 0% accelerator open degree slows down and also slams brake; Variator is kept 2 retaining states, uses the 26s time, and input speed is reduced to 800 rev/mins from 6100 rev/mins, and variator changes to 1 retaining; Shift process continues 3 seconds, and input speed is elevated to 1200 rev/mins from 800 rev/mins, and variator is kept 1 retaining state, uses the 4s time; Input speed is reduced to 800 rev/mins of idling modes from 1200 rev/mins, keeps the idling mode 3s time
The 3rd step: simulation real vehicle 60% throttle accelerates to certain speed of a motor vehicle, carries out the full pine tar door and the anxious operation of quickening that gives full throttle then, realizes variator in order or the retaining that jumps, the process that last pine tar door slows down,
Since 800 rev/mins of 1 retaining idling modes, 60% accelerator open degree quickens, and variator is kept 1 retaining state, uses the 7s time, and input speed is elevated to 5200 rev/mins from 800 rev/mins; Variator changes to 2 retainings, and shift process continues 2 seconds, and input speed is reduced to 3200 rev/mins from 5200 rev/mins, and variator is kept 2 retaining states, uses the 6s time; Be elevated to 4900 rev/mins from 3200 rev/mins, variator changes to 3 retainings, and shift process continues 2 seconds, and input speed is reduced to 3400 rev/mins from 4900 rev/mins, and variator is kept 3 retaining states; Use the 5.7s time, input speed is elevated to 3400-3800 rev/min from 3400 rev/mins, and 0% accelerator open degree slows down, and variator changes to 4 retainings, and shift process continues 2 seconds; Input speed is reduced to 2400 rev/mins from 3800 rev/mins, and variator is kept 4 retaining states, uses the 3s time, and input speed is reduced to 2200 rev/mins from 2400 rev/mins; 100% accelerator open degree quickens, and variator changes to 2 retainings, and shift process continues 4 seconds, and input speed is elevated to 5500 rev/mins from 2200 rev/mins; Variator is kept 2 retaining states, uses the 5s time, and input speed is elevated to 6600 rev/mins from 5500 rev/mins, and variator changes to 3 retainings; Shift process continues 3 seconds, and input speed is reduced to 4500 rev/mins from 6600 rev/mins, and variator is kept 3 retaining states, uses the 3.5s time; Input speed is elevated to 4700 rev/mins from 4500 rev/mins, and 0% accelerator open degree slows down, and variator changes to 4 retainings, and shift process continues 2 seconds; Input speed is reduced to 3000 rev/mins from 4700 rev/mins, keeps this rotating speed 1.5s time, and 100% accelerator open degree quickens, and variator changes to 3 retainings; Shift process continues 2 seconds, and input speed is elevated to 4900 rev/mins from 3000 rev/mins, and variator is kept 3 retaining states, uses the 28s time; Input speed is elevated to 6600 rev/mins from 4900 rev/mins, and variator changes to 4 retainings, and shift process continues 2 seconds, and input speed is reduced to 4700 rev/mins from 6600 rev/mins; 0% accelerator open degree slows down, and variator is kept 4 retaining states, uses the 11s time, and input speed is reduced to 4200 rev/mins from 4700 rev/mins; Variator changes to 3 retainings, and shift process continues 3 seconds, and input speed is elevated to 6000 rev/mins from 4200 rev/mins, and variator is kept 3 retaining states; Use the 27s time, input speed is reduced to 3200 rev/mins from 6000 rev/mins, and variator gets into on-position, uses the 7s time; Make input speed be reduced to 1 from 3200 rev/mins and keep off 800 rev/mins of idling modes, 60% accelerator open degree quickens, and repeats once according to above step
Owing to be that the oil pump monomer is examined, therefore only need the change procedure and the rate of change of simulation said process medium speed, and the variation of variator oil pump top hole pressure when hanging into different gear.The frequency that under the real vehicle state, uses according to above 3 steps also combines real vehicle long duration test method, confirms that the first step repeats 6000 times in the entire test, the second step repetition 3000 times, and the 3rd step repetition 6000 times, and three steps were undertaken by the setting sequence alternate,
(2) data acquisition
Oil pump discharge flow under the once following operating mode of per 50 hour records
A) pump speed 600rpm, oil pump top hole pressure 1.1MPa;
B) rotating speed 1000rpm, oil pump top hole pressure 1.6MPa;
C) rotating speed 1500rpm, the oil pump discharge flow under the oil pump top hole pressure 1.6MPa;
D) rotating speed is from 750-6000rpm, and the oil pump top hole pressure is respectively 0.65MPa, 0.85MPa, 1.05MPa, 1.55MPa,
(3) criterion
Oil pump through after the fail-test must satisfy following some requirement
A) oil pump discharge flow rate of descent is in 20%;
B) end clearance requires in the 0.02-0.048mm scope;
C) if cavitation erosion is cavitated the some length surface in 2.0mm, face width is in 1.0mm, and the degree of depth is in 1.0mm.
Claims (1)
1. ATF pump monomer reliability test method is characterized in that:
(1) long duration test state of cyclic operation
This test method is in order to simulate under the 4 gear transmission real vehicle lift-launch states, to go about 200,000 kilometers, the reliability of transmission oil pump; The formulation of this method is with reference to the durable test method of transmission assembly real vehicle, and for accelerated deterioration, the oil temperature control is at 110-120 ℃ high temperature range during test; It is foundation that the control of oil pump top hole pressure respectively keeps off main oil pressure with variator; Choose the central maximal value of each type and control, 1,2 retaining 1MPa, 3,4 retaining 0.8Mpa; Judge through measuring the oil pump discharge flow whether oil pump performance is normal in the process of the test, concrete process of the test divided for three steps:
The first step: simulation real vehicle full throttle quickens and slides the process of slowing down and adding manual shift,
From 700-800 rev/min of beginning of neutral idling mode, variator changes to 1 retaining, and shift process continues 3 seconds, keeps the idling mode 1s time; 100% accelerator open degree quickens, and variator is kept 1 retaining state, uses the 4-8s time, and input speed is elevated to 6200-6600 rev/min from 700-800 rev/min; Variator changes to 2 retainings, and shift process continues 3 seconds, and input speed is reduced to 3700-4100 rev/min from 6200-6600 rev/min, and variator is kept 2 retaining states; Use the 5-9s time, input speed is elevated to 6000-6400 rev/min from 3700-4100 rev/min, and variator changes to 3 retainings, and shift process continues 2 seconds; Input speed is reduced to 4100-4500 rev/min from 6000-6400 rev/min, and variator is kept 3 retaining states, uses the 22-26s time, and input speed is elevated to 6100-6500 rev/min from 4100-4500 rev/min; Variator changes to 4 retainings, and shift process continues 2 seconds, and input speed is reduced to 4500-4900 rev/min from 6100-6500 rev/min, keeps this rotating speed 30s time; 0% accelerator open degree slows down, and variator is kept 4 retaining states, uses the 7-11s time, and input speed is reduced to 4100-4500 rev/min from 4500-4900 rev/min; Variator changes to 3 retainings, and shift process continues 2 seconds, and input speed is elevated to 5600-6000 rev/min from 4100-4500 rev/min, and variator is kept 3 retaining states; Use the 11-15s time, input speed is reduced to 3800-4200 rev/min from 5600-6000 rev/min, and variator changes to 2 retainings, and shift process continues 2 seconds; Input speed is elevated to 5700-6100 rev/min from 3800-4200 rev/min, and variator is kept 2 retaining states, uses the 20.5-24.5s time, and input speed is reduced to 2000-2400 rev/min from 5700-6100 rev/min; Variator changes to 1 retaining, and shift process continues 1 second, and input speed is elevated to 2800-3200 rev/min from 2000-2400 rev/min, and variator is kept 1 retaining state; Use the 1-5s time, be reduced to idling mode 700-800 rev/min from 2800-3200 rev/min, keep the idling mode 3s time; 100% accelerator open degree quickens once more, repeats once according to above step
Second step: simulation real vehicle 10-20% throttle accelerates to certain speed of a motor vehicle, and throttle wide quickens then, the process that last pine tar door slows down,
Since 700-800 rev/min of 1 retaining idling mode, the 10-20% accelerator open degree quickens, and variator is kept 1 retaining state, uses the 3-7s time; Input speed is elevated to 1300-1700 rev/min from 700-800 rev/min, and variator changes to 2 retainings, and shift process continues 2 seconds, and input speed is reduced to 1000-1400 rev/min from 1300-1700 rev/min; Variator is kept 2 retaining states, uses the 5-9s time, and input speed is elevated to 1400-1800 rev/min from 1000-1400 rev/min, and variator changes to 3 retainings; Shift process continues 2 seconds, and input speed is reduced to 1100-1500 rev/min from 1400-1800 rev/min, and 100% accelerator open degree quickens, and variator changes to 1 retaining; Shift process continues 3 seconds, and input speed is elevated to 3800-4200 rev/min from 1100-1500 rev/min, and variator is kept 1 retaining state, uses the 2-6s time; Input speed is elevated to 6200-6600 rev/min from 3800-4200 rev/min, and variator changes to 2 retainings, and shift process continues 3 seconds, and input speed is reduced to 3800-4200 rev/min from 6200-6600 rev/min; Variator is kept 2 retaining states, uses the 1-5s time, and input speed is elevated to 5700-6100 rev/min from 3800-4200 rev/min; 0% accelerator open degree slows down and slams brake, and variator is kept 2 retaining states, uses the 22-26s time; Input speed is reduced to 700-800 rev/min from 5700-6100 rev/min, and variator changes to 1 retaining, and shift process continues 3 seconds; Input speed is elevated to 800-1200 rev/min from 700-800 rev/min, and variator is kept 1 retaining state, uses the 0-4s time; Input speed is reduced to idling mode 700-800 rev/min from 800-1200 rev/min, keeps the idling mode 3s time
The 3rd step: simulation real vehicle 45-60% throttle accelerates to certain speed of a motor vehicle, carries out the full pine tar door and the anxious operation of quickening that gives full throttle then, realizes variator in order or the retaining that jumps, the process that last pine tar door slows down,
Since 700-800 rev/min of 1 retaining idling mode, the 45-60% accelerator open degree quickens, and variator is kept 1 retaining state, uses the 3-7s time; Input speed is elevated to 4800-5200 rev/min from 700-800 rev/min, and variator changes to 2 retainings, and shift process continues 2 seconds, and input speed is reduced to 2800-3200 rev/min from 4800-5200 rev/min; Variator is kept 2 retaining states, uses the 2-6s time, is elevated to 4500-4900 rev/min from 2800-3200 rev/min, and variator changes to 3 retainings; Shift process continues 2 seconds, and input speed is reduced to 3000-3400 rev/min from 4500-4900 rev/min, and variator is kept 3 retaining states, uses the 1.7-5.7s time; Input speed is elevated to 3400-3800 rev/min from 3000-3400 rev/min, and 0% accelerator open degree slows down, and variator changes to 4 retainings, and shift process continues 2 seconds; Input speed is reduced to 2000-2400 rev/min from 3400-3800 rev/min, and variator is kept 4 retaining states, uses the 0-3s time, and input speed is reduced to 1800-2200 rev/min from 2000-2400 rev/min; 100% accelerator open degree quickens, and variator changes to 2 retainings, and shift process continues 4 seconds, and input speed is elevated to 5100-5500 rev/min from 1800-2200 rev/min; Variator is kept 2 retaining states, uses the 1-5s time, and input speed is elevated to 6200-6600 rev/min from 5100-5500 rev/min, and variator changes to 3 retainings; Shift process continues 3 seconds, and input speed is reduced to 4100-4500 rev/min from 6200-6600 rev/min, and variator is kept 3 retaining states, uses the 0-3.5s time; Input speed is elevated to 4300-4700 rev/min from 4100-4500 rev/min, and 0% accelerator open degree slows down, and variator changes to 4 retainings, and shift process continues 2 seconds; Input speed is reduced to 2600-3000 rev/min from 4300-4700 rev/min, keeps this rotating speed 1.5s time, and 100% accelerator open degree quickens, and variator changes to 3 retainings; Shift process continues 2 seconds, and input speed is elevated to 4500-4900 rev/min from 2600-3000 rev/min, and variator is kept 3 retaining states, uses the 24-28s time; Input speed is elevated to 6200-6600 rev/min from 4500-4900 rev/min, and variator changes to 4 retainings, and shift process continues 2 seconds, and input speed is reduced to 4300-4700 rev/min from 6200-6600 rev/min; 0% accelerator open degree slows down, and variator is kept 4 retaining states, uses the 7-11s time, and input speed is reduced to 3800-4200 rev/min from 4300-4700 rev/min; Variator changes to 3 retainings, and shift process continues 3 seconds, and input speed is elevated to 5600-6000 rev/min from 3800-4200 rev/min; Variator is kept 3 retaining states, uses the 23-27s time, and input speed is reduced to 2800-3200 rev/min from 5600-6000 rev/min; Variator gets into on-position, uses the 3-7s time, makes input speed be reduced to 700-800 rev/min of 1 retaining idling mode from 2800-3200 rev/min; The 45-60% accelerator open degree quickens, and repeats once according to above step
Owing to be that the oil pump monomer is examined, therefore only need the change procedure and the rate of change of simulation said process medium speed, and the variation of variator oil pump top hole pressure when hanging into different gear.The frequency that under the real vehicle state, uses according to above 3 steps also combines real vehicle long duration test method, confirms that the first step repeats 6000 times in the entire test, the second step repetition 3000 times, and the 3rd step repetition 6000 times, and three steps were undertaken by the setting sequence alternate,
(2) data acquisition
Oil pump discharge flow under the once following operating mode of per 50 hour records
A) pump speed 600rpm, oil pump top hole pressure 1.1MPa;
B) rotating speed 1000rpm, oil pump top hole pressure 1.6MPa;
C) rotating speed 1500rpm, the oil pump discharge flow under the oil pump top hole pressure 1.6MPa;
D) rotating speed is from 750-6000rpm, and the oil pump top hole pressure is respectively 0.65MPa, 0.85MPa, 1.05MPa, 1.55MPa,
(3) criterion
Oil pump through after the fail-test must satisfy following some requirement
A) oil pump discharge flow rate of descent is in 20%;
B) end clearance requires in the 0.02-0.048mm scope;
C) if cavitation erosion is cavitated the some length surface in 2.0mm, face width is in 1.0mm, and the degree of depth is in 1.0mm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102706680A (en) * | 2012-05-17 | 2012-10-03 | 厦门出入境检验检疫局检验检疫技术中心 | Durability test method for handstand machine |
| CN107966295A (en) * | 2017-11-24 | 2018-04-27 | 重庆长安汽车股份有限公司 | A kind of DCT vehicles gearshift cycle endurance test method |
| CN112213114A (en) * | 2020-09-03 | 2021-01-12 | 哈尔滨东安汽车发动机制造有限公司 | Durability test method for extended-range three-in-one electric drive system assembly rack |
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| US4125014A (en) * | 1977-08-26 | 1978-11-14 | Chrysler Corporation | Engine oil pump test assembly |
| US5499530A (en) * | 1994-10-03 | 1996-03-19 | Chrysler Corporation | Pneumatic tester for engine oil pumps |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102706680A (en) * | 2012-05-17 | 2012-10-03 | 厦门出入境检验检疫局检验检疫技术中心 | Durability test method for handstand machine |
| CN107966295A (en) * | 2017-11-24 | 2018-04-27 | 重庆长安汽车股份有限公司 | A kind of DCT vehicles gearshift cycle endurance test method |
| CN112213114A (en) * | 2020-09-03 | 2021-01-12 | 哈尔滨东安汽车发动机制造有限公司 | Durability test method for extended-range three-in-one electric drive system assembly rack |
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| CN102323064B (en) | 2013-09-25 |
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