JPH0151904B2 - - Google Patents

Description

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

The engines to be tested include annual transmission engines (hereinafter referred to as M/T engines) and automatic transmission engines (hereinafter referred to as A/T engines). A flywheel is attached to the /T engine, and a drive plate is attached to the A/T engine. Conventional starting devices for engine testing are divided into two types: one for M/T engines that uses a flywheel to provide starting rotational force, and the other for A/T engines that uses a drive plate to provide starting rotational force. There is,
In order to start the A/T engine with a starter designed specifically for M/T engines, it was necessary to replace the drive plate with a dummy flywheel.

The present invention provides a starting device that can start regardless of whether it is a M/T engine or an A/T engine, and does not require the conventional work of attaching a drive plate to a dummy flywheel. One embodiment of the present invention will be described below with reference to the attached illustrative drawings.

In Fig. 1, reference numeral 1 denotes a movable table which is supported horizontally and laterally through a guide rod 2, and is reciprocated by a driving cylinder/piston unit 3. A driving means 4 is mounted. Reference numeral 5 denotes a starting rotating body, which is concentrically coupled to the drive shaft 4a of the drive means 4 via a one-way rotating clutch 6 such as a cam clutch. This starting rotating body 5 has a drive shaft 5a.
A starting attachment 7 is concentrically attached to the front surface of a flange 5b that is connected to the front end of the flange 5b.

As shown in FIGS. 3 to 5, the starting attachment 7 is provided with bolt holes 8 for attachment to the flange 5b on its periphery, and has a front annular protrusion 7a.
Bolt fitting holes 9 are provided at equal intervals in the circumferential direction around the periphery. 10 is the front annular protrusion 7a
It is a recessed part surrounded by.

When the flywheel 12 of the M/T engine 11 to be tested and the starting rotating body 5 are in a concentric state as shown in FIGS. 1 and 2, the bolt fitting hole 9 allows the flywheel 12 to It is arranged so that it can simultaneously fit all the heads of a plurality of bolts 14 in the circumferential direction attached to the end of the crankshaft 13, and the starting rotation direction ( On the side (direction of arrow 15), an inclined guide groove 16 that becomes gradually deeper as it approaches the bolt fitting hole 9 is provided continuously along the circumferential direction.

Next, the engine starting method will be described. As shown in FIG. 1, the M/T engine 11 to be tested is set at a predetermined position where the starting rotating body 5 and the flywheel 12 are concentrically opposed to each other. In this state, the driving means 4 rotates the starting rotating body 5 at low speed in a direction in which it can be driven via the one-way rotary clutch 6, while the movable base 1 is moved forward by the cylinder/piston unit 3 for starting. By moving the rotating body 5 closer to the flywheel 12, the plurality of bolts 1 attaching the flywheel 12 are removed.
Each bolt fitting hole 9 of the attachment 7 in the starting rotary body 5 is smoothly fitted into the head of 4 through the inclined guide groove 16.

When the starting rotating body 5 and the head of the flywheel mounting bolt 14 are fitted together through the bolt fitting hole 9 as described above, the rotational force of the drive shaft 4a of the drive means 4 is applied to the one-way rotation clutch 6. , is transmitted to the flywheel 12 via the starting rotating body 5, the bolt fitting hole 9, and the flywheel mounting bolt 14, so by increasing the speed of the starting rotating body 5 to the engine starting speed by the driving means 4. , the engine 11 is started. Engine 11 like this
When the engine starts, the rotational speed of the starting rotating body 5, which rotates integrally with the flywheel 12, is faster than the rotational speed of the drive shaft 4a of the drive means 4.
The one-way rotation clutch 6 freely rotates, and the rotation of the engine 11 is not transmitted to the drive means 4.

As shown in FIG. 2, the A/T engine 17 is also
It is set at the same position as the T engine 11. The drive plate 18 of this A/T engine 17 is also connected to the crankshaft 19 by bolts 20 located on the same radius and at the same pitch as the flywheel mounting bolts 14 of the M/T engine 11. Since it is attached with
When starting this A/T engine 17, the starting rotary body 5 is moved forward in the same way as when starting the M/T engine 11 described above, so that each bolt fitting hole in the starting rotary body 5 is 9 can be automatically fitted into the head of the drive plate mounting bolt 20. In this state, the speed of the starting rotating body 5 is increased to the starting speed, and the rotational force of the driving means 4 is transmitted to the drive plate 18 via the bolt fitting hole 9 of the starting rotating body 5 and the drive plate mounting bolt 20. This allows the A/T engine 17 to be started.

The engine test starting device of the present invention can be implemented and used as described above, and includes a starting rotating body that is movable in the direction of the rotational axis and rotated by a drive means, and a starting device that is connected to the test engine side. A hole is formed that fits into the flywheel or drive plate mounting bolt of the test engine by forward movement, and the test engine is started by rotating the starting rotating body when the bolt is engaged with the hole. Since it is designed to be started, it does not matter whether the engine to be started is a M/T engine equipped with a flywheel or an A/T engine equipped with a drive plate.
By simply moving the starting rotating body forward and fitting the bolt fitting hole with the flywheel mounting bolt or drive plate mounting bolt on the engine side, the rotation of the starting rotating body is transmitted to the engine and the engine is started. It can be started reliably. Furthermore, there is no need to perform preparatory work on the engine to be tested for starting, such as replacing the drive plate of the A/T engine with a dummy flywheel, as in the past. Of course, compared to starting by pressing the clutch plate toward the flywheel, starting is more reliable, the time required is greatly shortened, and no dust is generated, so the working environment is improved.

[Brief explanation of drawings]

Fig. 1 is a partial longitudinal side view of the M/T engine starting state, Fig. 2 is a longitudinal sectional side view of the main parts of the A/T engine starting state, Fig. 3 is a partial front view of the starting attachment, and Fig. 4 Figure 5 is the same vertical side view, and Figure 3 is the same longitudinal side view.
It is a sectional view taken along the line AA in the figure. DESCRIPTION OF SYMBOLS 1... Movable base, 2... Guide rod, 3... Driving cylinder/piston unit, 4... Drive means, 5... Rotating body for starting, 6... One-way rotating clutch, 7... Starting attachment, 9... Bolt fitting hole, 11... M/T engine, 12...
Flywheel, 13, 19... Crankshaft, 14... Flywheel mounting bolt, 16
... Inclined guide groove, 17 ... A/T engine, 18
...Drive plate, 20...Drive plate mounting bolt.

Claims (1)

[Claims] 1. A starting rotating body that is movable in the direction of the rotational axis and rotated by a driving means is provided with a hole that fits into the flywheel or drive plate mounting bolt of the test engine when it moves forward toward the test engine. A starting device for an engine test, wherein the test engine is started by rotation of the starting rotating body in a state where the hole and the bolt are fitted.