Device for automatically maintaining idle speed of single-cylinder diesel engine

Abstract

The utility model relates to a device for automatically maintaining idle speed of a single-cylinder diesel engine, which comprises a gear chamber cover, an adjusting lever, a pull arm, an idle speed torsion spring and a speed regulating mechanism, and the adjusting lever, the pull arm, the idle speed torsion spring and the speed regulating mechanism are arranged in the gear chamber cover. The pull arm is fixed on the adjusting lever and can rotate along with the adjusting lever, one end of the idling torsion spring is fixed with the gear chamber cover, the other end of the idling torsion spring is fixed with the pull arm, the idling torsion spring can apply torsion to the pull arm, and the speed regulating mechanism is connected with the pull arm and can apply tension to the pull arm. According to the device for automatically maintaining the idling speed of the single-cylinder diesel engine, the idling torsion spring is additionally arranged on the basis of an original speed regulating mechanism, when the rotating speed of the diesel engine is reduced to flameout, the idling torsion spring can apply a torsion force, and the adjusting lever overcomes the thrust of the speed regulating mechanism to push the oil pump rack to the starting position again; therefore, the diesel engine can maintain a proper idling state to work, and flameout of the diesel engine is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engines, in particular to a device for automatically maintaining the idle speed of a single-cylinder diesel engine. Background Art

[0002] When the accelerator is released, the single-cylinder diesel engines on the market will have the oil pump rack adjusted to the parking position by the adjustment lever of the diesel engine because the torque applied to the speed control handle on the speed control mechanism is insufficient. The diesel engine speed will drop rapidly and it may easily cause the diesel engine to stall. Utility Model Content

[0003] In view of the above problems, the utility model proposes a device for automatically maintaining the idling speed of a single-cylinder diesel engine, which can prevent the diesel engine from stalling in an idling state.

[0004] The utility model is realized through the following technical solutions:

[0005] The utility model provides a device for automatically maintaining the idle speed of a single-cylinder diesel engine, comprising a gear chamber cover and an adjusting lever, a pulling arm, an idle torsion spring and a speed regulating mechanism arranged in the gear chamber cover, wherein the adjusting lever is rotatably connected in the gear chamber cover, one end of the adjusting lever is connected to an oil pump rack, the pulling arm is fixed on the adjusting lever and can rotate with the adjusting lever, one end of the idle torsion spring is fixed to the gear chamber cover, and the other end is fixed to the pulling arm, the idle torsion spring can apply a torsion force to the pulling arm, the speed regulating mechanism is connected to the pulling arm, and the speed regulating mechanism can apply a pulling force to the pulling arm.

[0006] In a preferred embodiment of the utility model, the speed regulating mechanism includes a speed regulating handle, a speed regulating connecting rod, a speed regulating tension spring, a speed adjusting screw and a pull plate. The speed regulating handle is rotatably connected to the gear chamber cover, the speed regulating connecting rod is fixed to one end of the speed regulating handle, the speed adjusting screw is fixed to the speed regulating connecting rod, one end of the speed adjusting screw is connected to the pull plate through the speed regulating tension spring, and the pull plate is fixed to the pull arm.

[0007] In order to facilitate driving the speed regulating handle to rotate, an arc groove capable of providing a sliding guide for one end of the speed regulating handle is provided on the gear chamber cover.

[0008] In order to facilitate the adjustment of the tension or thrust of the speed regulating tension spring, the speed regulating screw is fixed to the speed regulating connecting rod through an adjusting nut.

[0009] The beneficial effect of the utility model is that the device for automatically maintaining the idle speed of a single-cylinder diesel engine is achieved by adding an idle torsion spring on the basis of the original speed regulating mechanism. When the speed of the diesel engine drops to the point of flameout, the idle torsion spring can exert a torque, so that the adjustment lever overcomes the thrust of the speed regulating mechanism and pushes the oil pump rack to the starting position again, so that the diesel engine can maintain a suitable idle state to avoid flameout. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view of the device for automatically maintaining the idle speed of a single-cylinder diesel engine of the utility model;

[0011] Figure 2 A top view of the device for automatically maintaining the idle speed of a single-cylinder diesel engine according to the utility model;

[0012] Figure 3 It is a front view of the speed regulation principle of the device for automatically maintaining the idle speed of a single-cylinder diesel engine of the utility model;

[0013] Figure 4 The utility model is a top view of the speed regulation principle of the device for automatically maintaining the idle speed of a single-cylinder diesel engine. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the protection scope of the present invention. In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0015] like Figure 1-4 The device shown in the figure automatically maintains the idle speed of a single-cylinder diesel engine, comprising a gear chamber cover 1 and an adjusting lever 10, a pulling arm 3, an idle torsion spring 2 and a speed regulating mechanism arranged in the gear chamber cover 1. The adjusting lever 10 is rotatably connected to the gear chamber cover 1, one end of the adjusting lever 10 is connected to the oil pump rack, the pulling arm 3 is fixed to the rotating shaft of the adjusting lever 10 and is coaxially arranged with the rotating shaft, the pulling arm 3 can rotate simultaneously with the adjusting lever 10, one end of the idle torsion spring 2 is fixed to the gear chamber cover 1, and the other end is fixed to the pulling arm 3, the idle torsion spring 2 can apply torque to the pulling arm 3, and the adjusting mechanism The speed mechanism includes a speed regulating handle 7, a speed regulating connecting rod 5, a speed regulating tension spring 4, a speed adjusting screw 6 and a pull plate 9. The speed regulating handle 7 is rotatably connected to the gear chamber cover 1. The gear chamber cover 1 is provided with an arc groove for sliding and guiding one end of the speed regulating handle 7. The speed regulating connecting rod 5 is integrally formed with the speed regulating handle 7 and is arranged at the other end of the speed regulating handle 7 away from the arc groove. The speed adjusting screw 6 is fixed to the speed regulating connecting rod 5 by two adjusting nuts 8. One end of the speed adjusting screw 6 is connected to one end of the pull plate 9 by the speed regulating tension spring 4, and the other end of the pull plate 9 is fixed to the pull arm 3.

[0016] Combination Figure 3 , Figure 4 As shown, after the single-cylinder diesel engine completely releases the torque applied to the speed control handle 7, the speed adjustment screw 6 will not generate tension on the speed control tension spring 4, and the diesel engine adjustment lever 10 will immediately adjust the oil pump rack to the parking position, and the diesel engine speed will drop rapidly. When the speed drops to the point where it is about to shut down, the idle torsion spring 2 will apply a torsion force to the adjustment lever 10 (the torsion causes the adjustment lever 10 to rotate counterclockwise, as shown in FIG. Figure 4 As shown), the adjusting lever 10 overcomes the thrust of the speed regulating mechanism and pushes the oil pump rack to the starting position again, so that the diesel engine maintains a suitable idle state, thereby avoiding the diesel engine from stalling.

[0017] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0018] Finally, it should be noted that the above embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the utility model, and should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A device for automatically maintaining the idle speed of a single-cylinder diesel engine, characterized in that: It includes a gear chamber cover and an adjusting lever, a pulling arm, an idle torsion spring and a speed regulating mechanism arranged in the gear chamber cover. The adjusting lever is rotatably connected in the gear chamber cover, one end of the adjusting lever is connected to the oil pump rack, the pulling arm is fixed on the adjusting lever and can rotate with the adjusting lever, one end of the idle torsion spring is fixed to the gear chamber cover, and the other end is fixed to the pulling arm, the idle torsion spring can apply torque to the pulling arm, and the speed regulating mechanism is connected to the pulling arm, and the speed regulating mechanism can apply pulling force to the pulling arm.

2. The device for automatically maintaining the idle speed of a single-cylinder diesel engine according to claim 1, characterized in that: The speed regulating mechanism includes a speed regulating handle, a speed regulating connecting rod, a speed regulating tension spring, a speed adjusting screw and a pull plate. The speed regulating handle is rotatably connected to the gear chamber cover, the speed regulating connecting rod is fixed to one end of the speed regulating handle, the speed adjusting screw is fixed to the speed regulating connecting rod, one end of the speed adjusting screw is connected to the pull plate through the speed regulating tension spring, and the pull plate is fixed to the pull arm.

3. The device for automatically maintaining the idle speed of a single-cylinder diesel engine according to claim 2, characterized in that: The gear chamber cover is provided with an arc groove for guiding one end of the speed regulating handle to slide.

4. The device for automatically maintaining the idle speed of a single-cylinder diesel engine according to claim 2, characterized in that: The speed regulating screw is fixed to the speed regulating connecting rod through an adjusting nut.

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