SU1422056A1 - Bed for testing engine-transmission unit of vehicle - Google Patents

Abstract

The invention relates to transport engineering and can be used for bench testing of motor-transmission installations of vehicles. The purpose of the invention is to expand the speed range of the test. The sun gears 3 and 4 of the first 1 and second 2 three-link planetary mechanisms are connected to the output shafts 5 and 6 of the tested motor-transmission unit 7. The epicyclic gears 8 and 9 are interconnected and with the main brake 12 and inertial mass 11, drove 13 and 16 with the additional inertial mass 14s brake 15 and inertial mass 17 and brake 18. The speed range of the tests is determined by the three-stage brakes planetary mechanisms. 1 il. "

Description

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The invention relates to the transport machinery industry and can be used for bench testing of motor-transmission installations of vehicles.

The purpose of the invention is to expand the speed range of the test.

The drawing shows a general scheme of the stand.JQ

The stand contains the first 1 and second 2 three-tier planetary mechanisms, the first links (sun gears 3 and 4) of which are connected to the output shafts 5 and 6 of the test motor-transg5 mission set 7, the second links (epicyclic gears 8 and 9) are interconnected by the shaft 10 and with the main inertial mass 11 and brake 12. The third link (carrier 13) 20 of the first three-tier planetary mechanism 1 is connected to the first additional inertial mass 14 and brake 15, the third link (carrier 16) of the second three-tier planetary me-25 khanizm 2 connect Neno with the second additional inertial mass 17 and brake 18.

When imitating the loads characteristic of a straight-line movement of a tread of a sport-dongo, the rotational speed OJ. ,,, v of the output shafts 5 and 6 of the test 6 °

Tuemoi engine-transmission installation 7 is equal to

(, X (1-К) + Ш, -2-К,

where (A) is the corner speed of the additional brakes 15

N, - angular speed of the main brake 12,

K is a parameter of three-tier planetary Mechanisms 1 and 2. The maximum speed of rotation of the output shafts 5 and 6 of the test motor-transmission unit 7 is equal to

, "" "With mnk ... output 1f,

minimum

MOkC

 min, x min

aykh-), (P n

Then the speed test range of the engine-transmission installation is equal to

. "" X / m W gwx / would

G, (nk) -

/ C,; - (i.K) .Kj.

From the resulting emission, it follows that the speed range of tests of the engine-transmission set 7 is determined by the speed range of the main and additional brakes and the parameter K of three-tier planetary mechanisms. With

. ::

eleven

The speed test range is theoretically equal to infinity.

The bench also makes it possible to imitate the movement of a vehicle in a turning mode, on a slope, and with different resistance of movement along the sides of the vehicle.

Claims (1)

Claims for testing a motor vehicle transmission installation including two output shafts containing a main brake and inertial mass and first additional brakes and an inertial mass, characterized in that, in order to expand the speed test range, it is equipped with two three-tier planetary mechanisms and the second additional brakes and inertial mass, with the links of both three-tier planetary mechanisms connected to the corresponding output shafts of the tested gear units, the second links are interconnected with the main brake and inertial mass, the third link of the first three-tier planetary mechanism is connected with the first additional brake and inertial mass, and the third link of the second three-tier planetary mechanism with the second additional brake and inertial mass.