JPS5849421Y2 - Horizontal engine intake system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an intake system for a horizontal engine that is disposed on the side of the column of the control seat of a self-propelled working machine such as a combine harvester.

Conventionally, for example, the intake system of a horizontal engine, which is placed on the side of the column of the operator's seat of a combine harvester, is oriented with the cylinder in the front and the crankcase in the rear, as shown in the two-dot chain diagram in Fig. 1. Air cleaner a is installed at a high position in front of it.
is supported by the cylinder head via the air pipe.

For this reason, the air cleaner interferes with maneuvering operations and other equipment such as the placement of the lift cover, and the intake pipe is relatively short and sharp bends are formed in the intake pipe, resulting in low intake efficiency. I don't like it.

In view of this, this invention was designed to prevent the air cleaner from interfering with flight control operations and the placement of other devices.
The most distinctive feature is that the air cleaner is supported by a gear case cover fixed to one side of the horizontal engine.

Hereinafter, embodiments of the present invention will be described based on the drawings.

Fig. 1 is a side view of the combine harvester, with reference numeral 1 indicating the machine as a whole, 2 the frame, 3 the reaping device, 4 the threshing device, and 5 removing the rice from the reaping device 3 (to the device 4). A conveyance device for sending bundles, etc., 6 is a control platform, 7 is a driver's seat, 8 is a support for the driver's seat, 9 is a cover for raising the reaping device 3, and 10 is a traveling device.

The horizontal engine 11 that drives the reaping device 3, the threshing device 4, the conveying device 53, and the traveling device 10 is a water-cooled type with a radiator 12 fixed above it, and as shown in FIG. It is located on the side of the 80 driver side.

An intake port 14 is opened on the side surface of the cylinder head 130 of the horizontal engine 11 at the vehicle end.

An air cleaner 1 is attached to the rear of the gear case cover 16 fixed to the vehicle end side of the crankcase 15 via a mounting bracket 17.
8 is supported, and the air cleaner 18 and the intake port 14 are connected by an intake pipe 19 running horizontally.

Reference numeral 20 is a shim. As shown in FIG.
4 and the axis of the outlet pipe 21 of the air cleaner 18 are made almost orthogonal, and the two smooth bends 22 are connected to the intake pipe 19.
Form in the middle of.

As in this embodiment, by arranging the air cleaner 18 far away from the intake port 14 and lengthening the path of the intake pipe 19, the intake inertia increases. 22 can also be formed to be smooth and have a large radius of curvature, and the loss of intake inertia at the bent portion 22 can be reduced.

The greater the intake inertia, the higher the intake efficiency and the greater the output.

Furthermore, the smaller the loss, the less the reduction in suction efficiency, and the more the reduction in output is prevented.

Note that the reference numeral 23 is a fuel injection pump, and the reference numeral 24 in FIG.
25 is a fuel injection nozzle, and 25 is a safety cover.

Figure 4) This is a vertical cross-sectional view of the intake system.As explained above, this invention has the air cleaner placed outside the area of the gear case cover fixed to one side of the horizontal engine. Space for the pilot's legs to move around while sitting in the pilot seat located above or diagonally above, for example.
The air cleaner fan and intake pipe can be located outside the space where other devices such as the raising cover are located, and the horizontal two-way engine fan and its intake system can be placed on the side of the support of the operator's seat of the work machine. It is ideal for horizontal engines mounted on self-propelled work machines.

Also, position the air cleaner far from the intake port,
If the bent portion of the intake pipe that connects the air cleaner and the intake port is formed into a smoothly curved shape, the intake air flows smoothly with large inertia, increasing the intake efficiency and increasing the output.

Furthermore, if the air cleaner is placed between the pilot seat support and the horizontal engine, the support will serve as a protective frame for the air cleaner, preventing damage to the air cleaner due to collisions with the operator's feet or other objects.

In addition, for horizontal engines, if the air cleaner is placed on the opposite side from the working equipment, it is difficult for the dust scattered by the working equipment to reach the air cleaner, which can lead to clogging of the air cleaner.
It remains alive over a long period of time.

Additionally, by locating the air cleaner at the end of the vehicle closest to the horizontal engine, there is an advantage that the air cleaner can be easily inspected and cleaned.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of the combine harvester, FIG. 2 is a sectional view taken along the line [-II, FIG. FIG. 3 is a longitudinal side view of the intake device. 11...Horizontal engine, 13...Cylinder head, 14...Intake port, 15...
・Crank case, 16...Gear case cover 18...Air cleaner, 19...Intake pipe, 21...18 outlet pipe, 22...
・19 bends

Claims (1)

[Scope of utility model registration request] 1. An intake port 14 is opened on one side of the cylinder head 13 of the horizontal engine 11, and an air cleaner 1 is installed outside one side of a gear case cover 16 fixed to one side of the crankcase 15.
8, and an air cleaner 18 and an intake port 14 are connected by an intake pipe 19. 2. Practical configuration in which the center axis of the air intake port 14 and the axis of the outlet pipe 210 of the air cleaner 18 are made almost orthogonal, and the outlet pipe 21 of the air cleaner 18 and the air intake port 14 are connected by the air intake pipe 19 having a smooth bend 22. An intake system for a horizontal engine as claimed in claim 1.