JPH0143151B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an engine starting device used in an engine test facility that performs various tests by igniting an assembled engine.

The starting device for starting a conventional manual transmission engine (hereinafter abbreviated as MT engine) is equipped with a clutch plate boss located at the center of a flywheel with a clutch installed on the rear side of the MT engine. A starting shaft is provided which has a male spline shaft portion at its tip that fits into the female spline shaft hole on the flywheel side. The engine was configured to be started by driving the starting shaft. On the other hand, an automatic transmission engine (hereinafter referred to as AT engine) is equipped with a drive plate in place of the flywheel, and has a female spline shaft hole into which the male spline shaft at the end of the starting shaft fits. There is no. Therefore, conventionally, when it was necessary to start an AT engine using the starting device for the MT engine, it was necessary to replace the drive plate with a flywheel with a clutch to make the engine look like a MT engine.

The present invention eliminates the need to replace the drive plate with a flywheel with a clutch even when starting an AT engine as described above.
The present invention provides a starting device that can start the engine without problems in the same way as when starting a manual transmission engine.

Hereinafter, one embodiment of the present invention will be described based on the attached illustrative drawings. Reference numeral 1 denotes a starting shaft, which is concentrically connected to an output shaft 2a of a driving means 2 such as an electric motor or a hydraulic motor that rotationally drives the starting shaft. connected.
Reference numeral 3 denotes a slide base that supports the driving means 2, and is supported so as to be movable in the axial direction of the starting shaft 1 via two slide guide rods 5 parallel to the fixed base 4. 6 makes it reciprocate. Reference numeral 7 denotes a sliding member which is fitted onto the starting shaft 1 via a slide guide key 8 so as to be able to slide only in the axial direction. 9
is an electromagnetic clutch externally fitted on the sliding body 7, the transmission body 9a is integrally connected to the sliding body 7, and the fixed member 9c holding the electromagnet 9b and the passive rotating body 9d are connected to the sliding body 7. They are fitted externally through bearings 10 and 11, respectively, so as to be relatively rotatable. 1
Reference numeral 2 denotes a cup-shaped internal gear for driving the drive plate, which is attached to the passive rotating body 9d of the electromagnetic clutch 9 in a state concentric with the starting shaft 1. 1
Reference numeral 3 denotes a cylinder/piston unit for moving the slide body 7 via the fixing member 9c of the electromagnetic clutch 9, and is supported on the slide base 3. Reference numeral 14 denotes a male spline shaft portion formed at the tip of the starting shaft 1, and is provided so as to protrude forward from the internal gear 12 when the sliding body 7 is at the backward limit position as shown in FIG. There is.

To explain how to use it, when starting the MT engine 16 having the flywheel 15 with a clutch as shown in FIG. The starting shaft 1 is rotated at a very low speed while the slide base 3 is moved forward by the cylinder/piston unit 6. , flywheel 15
The boss portion 18 of the clutch plate 17 is set in
into the female spline shaft hole 18a formed in the spline shaft hole 18a. At this time, since the internal gear 12 is at the backward limit position with respect to the starting shaft 1 as shown in FIG. 1, the internal gear 12 does not contact the flywheel 15 or the like. In this state, by switching the starting shaft 1 from a state of slow rotation to a state of rotation at a predetermined starting speed, the male spline shaft 14, the female spline shaft hole 18a that fits therein, the clutch disc 17, and the flywheel are rotated. The main shaft of the engine 16 rotates at a predetermined starting speed via the engine 15, and the engine 16 is started.

As shown in FIG. 3, when starting the AT engine 20 equipped with the drive plate 19, the slide base 3 is moved forward with the AT engine 20 set at a predetermined position relative to the starter;
The starting shaft 1, which is rotated at a slow speed by the driving means 2 as described above, is moved forward toward the center of the drive plate 19 to the forward limit position. Next, with the electromagnetic clutch 9 operated in the transmission state, the cylinder/piston unit 13 moves the sliding body 7 forward with respect to the starting shaft 1, and moves forward together with the sliding body 7 and integrally with the starting shaft 1. The internal gear 12 rotating at a slow speed is engaged with the external gear 19a of the drive plate 19. Thereafter, as described above, the internal gear 12 is switched from the slow rotation state to the predetermined starting speed rotation state, and the main shaft of the engine 20 is rotated at a predetermined speed via the drive plate 19, thereby starting the AT engine 20. I can do it. After starting the engine, the electromagnetic clutch 9
By cutting the internal gear 12 and the passive rotating body 9
d can be rotated together with the drive plate 19 with its edge cut off from the starting shaft 1 side, so by adjusting GD ² of these parts that rotate together with the drive plate 19, Although the engine 20 can be operated stably in the same way as when the drive plate 19 is replaced with a flywheel, the clutch 9 is not essential in the present invention and can be omitted.

Incidentally, as the driving means 2, it is possible to use one that can be used as a power absorbing means after the engine is started. Further, in place of the electromagnetic clutch 9, other detachable clutches, one-way clutches, etc. may be used.

A clutch may be interposed between the starting shaft 1 and the output shaft 2a of the drive means 2 to protect the drive means 2 after the engine is started or to turn on and off the load on the engine. Further, in the above embodiment, the starting shaft 1 and the driving means 2 are configured to move together, but only the starting shaft 1 is supported on the slide base 3, and the output shaft 2 of the fixed driving means 2 and the starting shaft 1 are supported on the slide base 3. axis 1
It is also possible to interpose a telescoping transmission shaft portion that allows only axial sliding between the two.

The device of the present invention can be implemented as described above, and includes a starting shaft that can freely move forward and backward in the axial direction and has a male spline shaft portion at the tip, and a rotational drive means (driving means in the embodiment) for rotating this starting shaft. 2) a moving drive means (cylinder/piston unit 6 in the embodiment) for moving the starting shaft; a sliding body fitted to the starting shaft so as to be able to slide only in the axial direction; An internal gear for driving a drive plate that is held by a sliding body and rotates in conjunction with or integrally with this sliding body via a clutch, and a driving means (in the embodiment, a cylinder) that moves the sliding body in and out of the starting shaft. - Since it is equipped with a piston unit 13), by retracting the sliding body, the MT engine can be started as before using the male spline shaft at the tip of the starting shaft, and the AT engine When starting a motor, the sliding member is moved forward relative to the starting shaft to engage the internal gear with the external gear of the drive plate, allowing the drive plate to be started as is without replacing it with a flywheel. It can be done. Therefore, whether it is a MT engine or an AT engine, it is possible to start and test it in the assembled state during the assembly process, and it is possible to start the AT engine before testing as in the past.
This eliminates the need for the process of changing to a MT engine or returning to an AT engine after a test, greatly improving work efficiency.

In addition, the outer gear 15 of the flywheel 15 for MT
a and the outer gear 19 of the AT drive plate 19
a are in the same position and the outer gear 15a protrudes outward from the flywheel 15, when starting the MT engine, the outer gear 15a of the flywheel 15 is connected to the AT engine starting internal gear. 12 can be engaged and started.

[Brief explanation of drawings]

FIG. 1 is a partially longitudinal side view, and FIGS. 2 and 3 are partially longitudinal side views showing the state of use. 1... Starting shaft, 2... Drive means, 3... Slide stand,
5...Slide guide rod, 6...Slide base driving cylinder/piston unit, 7...Sliding body,
8...Slide guide key, 9...Electromagnetic clutch, 1
2... Internal gear, 13... Sliding body driving cylinder/piston unit, 14... Male spline shaft portion, 15
...Flywheel, 16...MT engine, 17...
Clutch plate, 18...Boss part, 18a...Female spline shaft hole, 19...Drive plate, 19a...Side gear, 20...AT engine.

Claims (1)

[Claims] 1. A starting shaft that is freely movable in the axial direction and has a male spline shaft portion at the tip, a rotational drive means that rotates the starting shaft, a moving drive means that moves the starting shaft, and an axial sliding member with respect to the starting shaft. a sliding body that can be fitted to the starting shaft; an internal gear for driving a drive plate that is held by the sliding body concentrically with the starting shaft and rotates in conjunction with or integrally with the sliding member via a clutch; A starting device for engine testing, comprising a drive means for moving the sliding body in and out.