JPS6027789Y2 - Engine timing display device for vehicles with automatic transmission - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an engine timing display device for a vehicle with an automatic transmission.

It is well known that general internal combustion engines are equipped with an engine timing display device for checking and adjusting the ignition timing for gasoline engines and for checking and adjusting the fuel injection timing for diesel engines. In Although,
In particular, the torque converter or fluid coupling (hereinafter referred to as the torque converter) of an automatic transmission is provided with a scale indicating the rotation angle of the engine crankshaft by marking lines or dots to cover the torque converter and the like, and also to cover the transmission. In the case where a pointer to display the reference position is fixed in the tax collection window opened in the housing member that supports the main body, the engine timing was adjusted while reading the rotation angle display scale using the pointer as a reference, resulting in misreading. There was a risk of incorrect adjustment.

In addition, in the case where only one point at a predetermined rotational angle of the crankshaft indicating the engine timing position is provided on the torque converter, etc. by a marked line or a dot, the same torque converter is commonly used for many types of engines with different engine timings. In this case, it is not possible to determine the correspondence with the engine based only on the marked lines, and there is a risk that a torque converter displaying a different engine timing position may be attached to the engine.

Therefore, the present invention provides a scale for displaying the rotation angle of the engine crankshaft on the relatively wide cylindrical surface of the front cover of the torque converter, and also displays the engine timing position on the cylindrical surface of the flange portion, which is the outermost periphery of the front cover. The provision of marked lines or dots as a display provides an apparatus that eliminates the above-mentioned conventional problems.

The present invention will be explained below with reference to the drawings.

In FIG.
As is well known, the torque converter 3, which is assembled concentrically and rotatably together with the transmission body 16, is drivingly connected to the transmission main body 16 at the right end portion.

The transmission body 16 is connected to an engine rear housing 11 extending from the engine 10 and covering the torque converter 3 at a portion of the transmission housing 15 extending from the transmission body 16.

The outer shell of the torque converter 3 is composed of a body 8 and a front cover 4, and contains a pump, a turbine, a stake, etc., and bolts and nuts 9a.

Both are fixed by 9b.

On the cylindrical surface portion 4a of the front cover 4, a scale 5 indicating the rotation angle of the engine crankshaft is formed by marked lines 6 as shown in the second figure, and numbers representing the angle are engraved.

Further, on the cylindrical outer surface of the flange portion 4b of the front cover 4, an engine timing position is indicated by a marked line 7.

A tax collection window 12 is provided at a predetermined position of the engine rear housing 11 corresponding to the rotation angle display scale 5 and the engine timing position display marking line 7, and a reference position is displayed near the circumferential center of this window 12. pointer 13
is engraved.

Incidentally, the rotation angle display scale 5 of the crankshaft is displayed based on the top dead center of the piston of the first cylinder of the engine 1, with the position corresponding to the pointer 13 at this time being 0 degree of the rotation angle of the crankshaft. Needless to say, the marking line 7 for the engine timing position display can be set by marking the timing position from the angle display scale 5 in accordance with the designated timing of various engines, and can be used for various engines with different timings. This is convenient when the same torque converter is used in common, and in order to make the 0 degree of the angle display scale 5 coincide with the piston top dead center, generally the crankshaft 1 and the torque converter 3
Crankshaft 1 of drive plate 2 connecting
This is done by changing the relative position of the knock pin that determines the rotational mounting position of the crankshaft 1 and torque converter 3, and the knock pin is adjusted in advance so that the rotational mounting positions of the crankshaft 1 and torque converter 3 coincide with each other according to the engine. is provided.

Therefore, when inspecting or adjusting the engine timing in a device configured as described above, for example, in a gasoline engine, a timing light is used to simultaneously ignite the first cylinder, that is, synchronize it with the rotational speed of the crankshaft 1. Turn on the light, statically observe the crankshaft rotation angle display scale 5 and engine timing position display markings 7 on the rotating torque converter 3, and point the pointer 1.
Check the engine timing by checking whether 3 and marked line 7 match. If they do not match, advance or delay the opening timing of the distributor point to make them match and check the engine timing. Just adjust the timing.

In this case, the crankshaft rotation angle display scale 5 and the engine timing position display marking line 7 make it possible to read the amount of delay or advance of the engine timing, and also read the actual timing angle.

As explained in detail above, according to the present invention, the rotation angle display scale of the engine crankshaft is provided on the relatively wide circle Mi portion of the front cover of the torque converter, and the scale indicating the rotation angle of the engine crankshaft is provided on the cylindrical surface of the flange portion, which is the outermost peripheral portion of the front cover. By providing marked lines or dots to indicate the engine timing position, it is possible to prevent incorrect adjustment due to misreading as seen with conventional devices, or when the same torque converter is used commonly for various engines with different engine timings. Problems such as the above-mentioned incorrect installation can be resolved.

Furthermore, since the rotation angle of the engine crankshaft is displayed on the relatively wide cylindrical surface of the front cover of the torque converter, marking lines can be easily marked, and the number of the angle display can be made large, making it easy to read.

Furthermore, by providing a marked line or dot to indicate the engine timing position on the outermost flange part, it is possible to bring the pointer closer to the reference position (pointer) provided on the tax collection window of the housing, thereby reducing adjustment errors. It is possible to obtain superior effects such as being able to do it.

[Brief explanation of the drawing]

FIG. 1 is a partial longitudinal sectional view of the engine and automatic transmission of a vehicle with an automatic transmission to which the present invention is applied, and FIG. 2 is an enlarged partial view of the present invention. 10...Engine, 1...Crankshaft, 3...Torque converter, 11...
...Housing member, 4...Front cover, 12...Tax collection window, 13...Reference position, 7...Engine timing position.

Claims (1)

[Scope of utility model registration request] It has a torque converter concentrically fixed to the crankshaft of the engine, a housing member extending from the engine body for covering the torque converter and attaching the automatic transmission body, and having a relatively wide cylinder of the front cover of the torque converter. A rotation angle scale of the crankshaft is displayed on the surface, a tax collection window is provided in the housing portion outside of the rotation angle scale display, and a reference position is provided near the circumferential center of the tax collection window. An engine timing display device for a vehicle with an automatic transmission, characterized in that an engine timing position display is provided on a cylindrical surface of a flange portion, which is the outermost periphery of a cover.