JPH08200099A - Diesel engine with electronic governor - Google Patents

Abstract

(57) [Summary] [Structure] The structure of the diesel engine with electronic governor is as follows. That is, the rocking lever 2 is housed in the case 1, the fuel metering rack 4 of the fuel injection pump 3 is interlockingly connected to the rocking lever 2, and the rotation interlocking shaft 9 is inserted into the lid 8 of the case 1. The lid 10 is mounted with an actuator 10 from the outside, the drive shaft 11 is interlocked with the rotation interlocking shaft 9, and an output lever 13 is attached to an inner end portion of the case. The urging means 2 is provided on the No. 2 and the oscillating lever 2 is urged to the fuel amount reducing side L by this and brought into pressure contact with the output lever 13. [Effect] The governor lever housing case 117 is included in the case 1.
The rocking lever 2 is a governor lever 121, the rotation interlocking shaft 9 is a speed control lever or an engine stop lever 119 lever shaft 120, the output lever 13 is a speed control lever or engine stop lever 122, and the lid 8 The lever shaft mounting lid 122 can be diverted to each.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diesel engine with an electronic governor, and more particularly to a diesel engine that can be manufactured by diverting parts for a mechanical governor.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional technique of a diesel engine with an electronic governor. This is case 1
No. 01 case wall, an opening 107 is provided in a case wall 106 in a direction orthogonal to the fuel increase / decrease moving direction 105 of the fuel metering rack 104 of the fuel injection pump 103, and the actuator 110 is directly attached to a mounting seat 115 on the periphery thereof. The drive shaft 111 of the actuator 110 is inserted into the opening 107, the connecting rod 116 is provided between the drive shaft 111 and the fuel metering rack 104 of the fuel injection pump 103, and the actuator 110 is connected via the connecting rod 116. The fuel metering rack 104 is interlockingly connected.

[0003]

In the above conventional technique, as shown in FIG. 4, the actuator 110 is mounted on the case 101.
It is necessary to use a structure that can be directly attached to the connecting rod 116, and a connecting rod 116 that has a structure that can be connected to the actuator 110. That is, it is necessary to use a dedicated component unique to the electronic governor including an actuator for both the case 101 and the connecting rod 116, and a component for a mechanical governor without an actuator cannot be diverted. Therefore, the manufacturing cost of these parts is high, and the manufacturing cost of the engine is high.

An object of the present invention is to provide a diesel engine with an electronic governor which can be manufactured at low cost by diverting parts for a mechanical governor.

[0005]

According to the present invention, as shown in FIG. 1, a rocking lever 2 is housed in a case 1, and a fuel metering rack 4 of a fuel injection pump 3 is housed in the rocking lever 2. Of the case walls of the case 1 which are interlocked and connected, the case wall 6 of the direction parallel to the fuel increasing / decreasing movement direction 5 of the fuel metering rack 4
The opening 7 is provided in the opening 7, the lid 8 is attached to the opening 7, the rotation interlocking shaft 9 is inserted into and supported by the lid 8, and the actuator 10 is attached to the lid 8 from the outside. The rotation interlocking shaft 9 is interlockingly connected to the drive shaft 11, the output lever 13 is attached to the inner end of the case of the rotation interlocking shaft 9, and the oscillating lever 2 is provided with the urging means 14. The rocking lever 2 is urged toward the fuel amount reducing side L to be pressed against the output lever 13.

[0006]

In the present invention, as shown in FIG. 1, the lid 8 serves as a mounting seat for the actuator 10, and the output lever 13 attached to the inner end of the case of the rotation interlocking shaft 9 inserted through the lid 8.
The fuel metering rack 4 can be interlocked from the actuator 10 by causing the swing lever 2 to be received by the actuator 10. Therefore, the components for the mechanical governor shown in FIG. 3 can be diverted as the components for the electronic governor.

That is, as shown in FIG. 1, the case 1 has a governor lever housing case 117, the swing lever 2 has a governor lever 121, and the rotation interlocking shaft 9 has a governor lever 120 or a lever shaft 120 of an engine stop lever 119. The speed control lever or the engine stop lever 119 can be diverted to the output lever 13, and the lever shaft mounting lid 122 can be diverted to the lid body 8. Moreover, the diverted parts can be used as they are. Further, since the swing lever 2 is biased to the fuel reduction side L, the fuel metering rack 4 of the fuel injection pump 3 is moved to the fuel reduction side L via the swing lever 2 when the energization of the actuator 10 is stopped. It is forcibly moved.

[0008]

According to the present invention, the following effects can be obtained. Since the parts for the mechanical governor can be diverted as the parts for the electronic governor, it is possible to reduce the manufacturing cost of the parts, and hence the manufacturing cost of the engine. Since the repurposed mechanical governor parts can be used in their original positions, assembly mistakes are unlikely to occur. When the energization of the actuator is stopped, the fuel metering rack of the fuel injection pump is forcibly moved to the fuel reducing side via the swing lever, so that the engine overrun can be reliably avoided.

[0009]

An embodiment of the present invention will be described with reference to the drawings.
1 and 2 are diagrams for explaining an embodiment of the present invention. The structure of the diesel engine with an electronic governor of this embodiment is as follows. That is, as shown in FIG. 1, the injection pump case 23 is provided on the lateral side of the cylinder block (not shown), and the fuel injection pump 3 is inserted and accommodated in the upper portion of the injection pump case 23 from above. Two
A fuel injection cam shaft 24 is installed in the lower portion of the interior of the fuel cell 3. The case 1 is attached to the front part of the injection pump case 23, and the fuel injection cam gear 27 is attached to the tip of the fuel injection cam shaft 24 in the case 1.

In this embodiment, in order to diversify the parts for the mechanical governor and manufacture them at a low cost, the following constitution was adopted. That is, as shown in FIG. 1, a rocking lever 2 is housed in a case 1, and a fuel metering rack 4 of a fuel injection pump 3 is interlockingly connected to the rocking lever 2 and An opening 7 is provided in a case wall 6 in a direction parallel to the fuel increasing / decreasing movement direction 5 of the fuel metering rack 4, a lid 8 is attached to the opening 7, and a rotation interlocking shaft 9 is inserted into the lid 8 for support. At the same time, the actuator 10 is attached to the lid 8 from the outside, and the actuator 10
The rotation interlocking shaft 9 is interlockingly connected to the drive shaft 11 of, and the output lever 13 is attached to the inner end of the case of the rotation interlocking shaft 9.
The rocking lever 2 is provided with a biasing means 14, and the biasing means 14 biases the rocking lever 2 toward the fuel amount reducing side L and presses it against the output lever 13.

The structure of a diesel engine with a mechanical governor in which parts are diverted is as follows. That is, as shown in FIG. 3, the injection pump case 123 is provided on the lateral side of the cylinder block (not shown).
The fuel injection pump 103 is inserted from above into the upper part of the fuel cell 23 and accommodated therein, and the fuel injection cam shaft 124 is provided below the lower part of the injection pump case 123. Injection pump case 12
Attach the governor lever housing case 117 to the front part of 3,
A fuel injection cam gear 127 is attached to the tip of the fuel injection cam shaft 124 in the governor lever housing case 117.

Then, the governor lever 121 is housed in the governor lever housing case 117.
1, the fuel metering rack 104 of the fuel injection pump 103 is interlocked and connected, and the fuel increasing / decreasing moving direction 1 of the fuel metering rack 104 among the case walls of the governor lever housing case 117
An opening 107 is provided in the case wall 106 in a direction parallel to 05, and a lid 108 is attached to the opening 107. Then, a lever and a concentric lever shaft 1 of the cylinder are attached to the lid 108.
An engine stop lever 119 is attached to the case inner end of the lever shaft 120 of the rod, and a speed control lever 118 is attached to the inner end of the case of the cylindrical lever shaft 125. Engine stop lever 11
No. 9 faces the governor lever 121 from the fuel increase side R thereof. The governor spring 12 is attached to the speed control lever 118.
The governor lever 121 is interlockingly connected via 6.

As parts for the electronic governor of the embodiment shown in FIG. 1, parts for the mechanical governor of the engine shown in FIG. 3 can be diverted. That is, as shown in FIG. 1, a governor lever housing case 117 is mounted on the case 1, a governor lever 121 is mounted on the swing lever 2, an engine stop lever 119 lever shaft 120 is mounted on the rotation interlocking shaft 9, and an output lever 13 is mounted on the output lever 13. The engine stop lever 119 and the lever shaft attachment lid 122 can be diverted to the lid 8. Moreover, the diverted parts can be used as they are.

In this embodiment, a stay 28 is attached to the actuator 10, and the stay 28 is fastened to the seat portion of the lid body 8 together with the lid body 8 with bolts 29. For this reason, it is not necessary to newly provide a seating portion for the actuator 10, and manufacturing can be performed more easily. Further, in this embodiment, as shown in FIG. 1 (A), a coil spring is used for the biasing means 14, and both ends of this coil spring are connected to the lever pivot 30 of the rocking lever 2 and its support bracket 31. Each of them is fixed and the swing lever 2 is biased. Therefore, the swing lever 2 can be biased with an extremely simple structure.

Reference numeral 32 in FIG. 1 denotes a fuel limiter, which is attached to the case wall of the case 1 in a penetrating manner. As shown in FIG. 2 (B), the specific structure of the fuel restrictor 32 is such that the fuel restricting pin 34 is projected from the cylindrical body 33 and the spring receiving seat 35 is housed in the cylindrical body 33 so as to be screwable.
The urging spring 36 received by the spring receiving seat 35 urges the fuel limiting pin 34 in the protruding direction. Fuel restriction pin 3
The tip end of 4 is exposed to the rocking lever 2 from the fuel increase side R thereof.

Therefore, the swing of the swing lever 2 is stopped by the fuel limiting pin 34, and the fuel metering rack 4 is positioned at the fuel limiting position. Further, when the engine is started, the actuator 10 moves the swing lever 2 to the fuel increase side R
When the fuel restriction pin 32 is pushed into the cylindrical body 33 against the urging force of the urging spring 36, the fuel metering rack 4 moves to the start increasing position and starts by increasing the fuel amount. Is done smoothly.

The contents of the embodiments of the present invention are as described above, but the present invention is not limited to the above embodiments. For example, the rotation interlocking shaft 9 includes the lever shaft 1 of the speed control lever 118.
25, and the speed control lever 118 may be used for the output lever 13.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a diesel engine with an electronic governor according to an embodiment of the present invention, FIG. 1 (A) is a longitudinal side view of a main part, and FIG. 1 (B) is a line BB in FIG. 1 (A). FIG.

2 (A) is a sectional view taken along line II-II of FIG. 1 (A), and FIG. 2 (B) is an enlarged sectional view of a fuel restrictor.

FIG. 3 is a view corresponding to FIG. 1A of a diesel engine with a mechanical governor in which parts are diverted in an embodiment of the present invention.

FIG. 4 is a diagram corresponding to FIG. 1A of a diesel engine with an electronic governor according to a conventional technique.

[Explanation of reference numerals] 1 ... Case, 2 ... Swing lever, 3 ... Fuel injection pump, 4
... fuel metering rack, 5 ... fuel increase / decrease moving direction, 6 ... case wall, 7 ... opening, 8 ... lid, 9 ... rotation interlocking shaft, 10 ... actuator, 11 ... drive shaft, 13 ... output lever, 14 ...
Energizing means, L ... Fuel reduction side.

Front Page Continuation (72) Inventor Akira Takaoka 64 Ishizukitacho, Sakai City, Osaka Prefecture Kubota Sakai Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. A rocking lever (2) is housed in a case (1), and a fuel metering rack (4) of a fuel injection pump (3) is interlockingly connected to the rocking lever (2). Among the case walls of (1), an opening (7) is provided in the case wall (6) in a direction parallel to the fuel increasing / decreasing movement direction (5) of the fuel metering rack (4), and this opening is formed.
The lid (8) is attached to (7), and the rotation interlocking shaft is attached to this lid (8).
(9) is inserted and supported, and an actuator (10) is attached to the lid body (8) from the outside, and the rotation interlocking shaft (9) is interlockingly coupled to the drive shaft (11) of the actuator (10). Then, an output lever (13) is attached to the inner end of the case of the rotation interlocking shaft (9), and the swing lever (2) is provided with a biasing means.
(14) is provided, and the oscillating means (14) urges the rocking lever (2) toward the fuel reduction side (L) to press it against the output lever (13). Diesel engine with.