JPH03180116A - Apparatus for controlling output power of engine of combine or the like - Google Patents

Abstract

PURPOSE:To enable the increase of the output power of an engine and the smooth driving and steering of a combine, etc., by using the subject apparatus constructed in such a manner as to directly supply cooled air from a cooler to the suction port of an engine when the machine is driven and turned in an over-heated state of the engine. CONSTITUTION:Cooled air is supplied to the side of a cabin 1 in normal operation state. When high temperature corresponding to the over-heated state of an engine 2 is detected by a water-temperature sensor 16, the turning operation position is detected 17. A valve is changed over to supply the total or a part of cooled air from a cooler 4 to the suction port 12 through a duct 13. In the course of the above operation, an operation lever 6 is shifted from the neutral position A toward the right or left to operate a steering valve 18 and a power steering valve 19 interlocked with the lever. Within the range of the initial inclination angle B of the turning inclination of the lever 6, the steering clutch of the steering apparatus of the inclined side is released to effect the steering motion. Furthermore, a valve 19 are actuated at a turning position C to control the followability of the driving apparatus at the released side of the steering clutch.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an engine output control device for combine harvesters, tractors, etc.

(Prior art and the problem to be solved by the invention) In a combine harvester, the engine output is maximized during reaping work, so when turning steering is started at the end of reaping, the running resistance suddenly increases and the output is reduced. It is easy to run out of grain, and if the threshing device is clogged, it can easily result in poor sorting.

The present invention eliminates such defects and temporarily increases the output of the engine when the vehicle is traveling and turning when the engine is overheating.

(Means for Solving the Problems) This invention increases the cooling air from the cooler by increasing the temperature of the engine's radiator cooling water and turning the vehicle body.
This is a configuration of an engine output control device for a combine harvester or the like, which is provided with a switching device for switching the supply to the intake port of the engine.

(Function) When the engine overheats during work while the vehicle is moving, the temperature of the radiator cooling water reaches a certain high temperature, and if a turning operation is performed to change the direction of travel of the vehicle in this state, this will cause the cooler to cool the engine. Wind is supplied to the engine intake port by switching the switching device, and the engine receives an intercooler effect by inhaling this cooling air, so that the engine output is maintained without being reduced, making cornering easier. can be done.

(Effects of the Invention) Since the present invention is configured as described above, when the engine turns when the engine overheats, the cooling air cooled by the cooler is directly supplied to the intake port of the engine. This increases the output of the engine, prevents a decrease in engine output due to overload during overheating, and enables smooth running and turning.

(Example) On the national side, the combine harvester is equipped with an engine 2 that drives a traveling device, a reaping device, a threshing device, a cooler that cools the inside of the cabin 1, etc., in an engine room 3.
A cooler duct 5 is provided for introducing cold air to be cooled by the cooler 4, and the traveling device is provided with a hydraulic circuit 7 that can be freely steered by operating a steering lever 6.

A radiator 8 and a radiator fan 9 are provided in the engine compartment 3, and the radiator 8 is cooled by rotation of the radiator fan 9, and the engine 2 main body is cooled by the cooling water of the radiator 8. An air chamber 11 having an air cleaner IO is provided in the upper part of the engine room 3, and the outside air is sucked from the air chamber 11 into an intake port 12 of the air cleaner IO.

A duct 13 communicating with the air chamber 11 is connected between the cooler duct 5 that communicates with the cabin 1 that covers the cockpit, etc., and the air chamber 11 .

A switching valve 14 is provided as a switching device to switch the cooling air between the inside of the cabin 1 and the side of the engine 2, and the duct 13 is connected to the air chamber 11.
The air intake port 12 is opened close to the air intake port 12 and opposite to the air intake port 12.

The switching valve 14 of the switching device is switched by a solenoid 15, and the solenoid 15 is switched by a water temperature sensor 16 that detects the temperature of the cooling water of the radiator 8 and a swing sensor 17 that detects the swing operation of the steering lever 6. controlled. Normally, all of the cooling air is blown toward the cabin 1 side, but when the water temperature sensor 16 detects a high temperature due to overheating of the engine 2 and the swing sensor 17 detects the swing operation position, the cooling air from the cooler 4 is sent to the cabin 1 side. Switching control is performed so that all or part of the air is blown to the intake port 12 side through the duct 13.

The operating lever 6 rotates from the neutral position A to the left and right to operate the steering valve 18 and the power steering valve 19.
The initial inclination angle B of the rotational inclination of the steering lever 6 is
In this range, disengage the steering clutch of the traveling device on the slope side to perform steering.

Further, by operating C which increases the rotational inclination angle of the steering lever 6 and the power steering valve 19 to brake the rotation of the traveling device on the steering clutch release side, turning can be performed at the angle of breath. . At this turning position C, the turning sensor 17 can be turned on.

The hydraulic circuit 7 of the steering device includes a hydraulic pump 21, a steering cylinder 22, etc. that operates a steering clutch of a traveling device including a pair of left and right crawlers.

In addition, the overheating state of the engine 2 is detected, the alarm is set off by this detection, and the following 5 notifications are sent.
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It is also possible to interlock the controls so that the

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being a mechanical diagram and FIG. 2 being a hydraulic circuit diagram of a steering device. (Explanation of symbols) 2 Engine 4 Cooler 5 Cooler duct 6 Steering lever 8 Radiator 12 Intake port 13 Duct 14 Switching valve

Claims (1)

[Claims] An engine output control device for a combine harvester, etc., which is equipped with a switching device that switches cooling air from a cooler to be supplied to an engine intake port in response to an increase in the temperature of the engine's radiator cooling water and a turning operation of the vehicle body.