KR20110104301A

KR20110104301A - A agricultural work vehicle

Info

Publication number: KR20110104301A
Application number: KR1020100023369A
Authority: KR
Inventors: 백경석
Original assignee: 대동공업주식회사
Priority date: 2010-03-16
Filing date: 2010-03-16
Publication date: 2011-09-22

Abstract

The present invention relates to an agricultural work vehicle.
According to the present invention, it is possible to efficiently arrange the engine control unit without increasing the space inside the engine room, and maintain a stable cooling effect by not disturbing the flow of outside air entering the radiator.

Description

Agricultural work vehicle

The present invention relates to an agricultural work vehicle, and more particularly, to an agricultural work vehicle that can efficiently arrange an engine control unit without increasing the space inside the engine room.

In general, an engine control unit (ECU) or an engine control module (ECM) is to control various internal operations of the engine.

Recently, due to the serious environmental pollution, interest in the environment is increasing all over the world, and in particular, the harmful emissions emitted by automobiles account for a large proportion of the total emissions, so the interest in engines directly related to environmental and energy issues is increasing. It is increasing day by day.

This requirement also applies to agricultural work vehicles, and as the exhaust gas regulations on agricultural work vehicles are tightened, an engine control unit (ECU) for controlling the exhaust gas of the engine must be added.

The engine control unit supplies fuel through the injector after determining the amount of fuel to maintain the optimum engine condition. The initial engine control unit only controlled the fuel injection timing and fuel injection amount, but the fuel injection amount has recently been improved due to the development of computer technology. In addition to the fuel injection timing, various controls such as ignition timing and idling speed control are performed.

The engine control unit sends information on the engine speed, intake air amount, start signal, opening degree of the throttle valve, cooling water temperature and intake temperature from various sensors. Calculate and give injection command to the fuel injector.

Such an engine control unit is installed in an engine room surrounded by a bonnet. In consideration of wiring costs, the engine control unit is preferably disposed at a position close to the engine, but it is also important to install the engine control unit so as not to be affected by engine heat.

For this reason, an insulation box is installed near the engine and an engine control unit is installed therein, but a box having good insulation performance is required, and a space for arranging the insulation box in the engine room must be provided. There is a problem of limiting the degree of freedom of arrangement of other parts and increasing the installation cost.

Therefore, the necessity of installing the engine control unit is increasing so as not to increase the space inside the engine room and to affect the arrangement of other parts.

The present invention provides an agricultural work vehicle that can efficiently arrange the engine control unit without increasing the space inside the engine room.

Agricultural work vehicle according to the present invention is a bonnet forming the appearance of the engine room; A radiator installed in front of the engine in the engine room; An air cleaner installed in front of the radiator; And an engine control unit fixed by a support bracket for supporting the air cleaner and installed under the air cleaner.

Here, the engine control unit is preferably installed close to the lower surface of the air cleaner, more specifically, it is more preferably fixed to the lower surface of the support bracket.

The engine control unit may be fixedly installed by a fixing bracket connected to the support bracket.

On the other hand, the agricultural work vehicle according to the present invention may further comprise a dustproof member for preventing the engine control unit from being damaged by vibration.

According to the present invention has the following effects.

First, it is possible to efficiently arrange the engine control unit without increasing the space inside the bonnet, and there is an advantage of increasing the space utilization rate without impairing the freedom of arrangement of other parts.

Second, the engine control unit is located under the air cleaner to obtain a waterproof and heat dissipation effect.

Third, since the engine control unit is disposed at the rear of the lower part of the air cleaner, the cooling air resistance to the radiator is not additionally generated, thereby maintaining the cooling efficiency stably.

1 is a side view of the bonnet of the agricultural work vehicle according to the present invention
Figure 2 is a front view inside the bonnet of the agricultural work vehicle according to the invention
3 is a perspective view of the inside of the bonnet of the agricultural work vehicle according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art. Like numbers refer to like elements throughout.

1 is a side view of the bonnet of the agricultural work vehicle according to the invention, Figure 2 is a front view of the inside of the bonnet of the agricultural work vehicle according to the invention, Figure 3 is a perspective view of the bonnet inside of the agricultural work vehicle according to the invention.

1 to 3, the agricultural work vehicle according to the present invention is installed in front of the engine (not shown) in the bonnet 10 and the engine room 11 largely forming the outline of the engine room 11. It is fixed by a radiator 20, an air cleaner 30 installed in front of the radiator 20, and a support bracket 32 supporting the air cleaner 30, and is installed below the air cleaner 30. It may be made, including the engine control unit 40.

The engine room 11 is rotatable around the front axle frame 12 protruding forward from the bottom of the agricultural work vehicle and the bottom plate 14 and the hinge shaft (not shown) placed on the top of the axle frame 12. It is a space formed by the bonnet 10 to be installed.

The engine is placed in the rear of the engine room 11, and the engine may be formed of a diesel engine, and a control system such as an injection system, a fuel supply pump, an exhaust circulation system, an oxygen sensor, and an air flow rate may be formed of a pressure type fuel injection device. Detectors such as sensors, intake temperature sensors, intake pressure sensors, water temperature sensors, load sensors, etc. are provided together, and the engine control unit 40 is provided to receive information from the plurality of detectors and to control the controllers appropriately. will be.

In the detector, the oxygen sensor measures the amount of oxygen contained in the exhaust gas and delivers the output voltage to the engine control unit. The computer takes the signal from the oxygen sensor and controls the injector's time and automatically adjusts the catalytic converter to be always close to efficient fuel consumption, thereby increasing the purification rate of the catalytic converter.

On the other hand, there are five types of air flow sensors such as the Kalman vortex method, the map sensor method, the vane type, the hot wire method, and the hot film method. When the Kalman vortex phenomenon is converted into an electric digital signal and sent to the engine control unit 40, the engine control unit calculates the basic injection amount and time using the intake air amount signal and the engine speed.

The water temperature sensor is installed in the coolant passage to detect the coolant temperature. When an electrical signal related to the water temperature is input to the engine control unit 40, the water temperature sensor compensates the engine rpm when cold according to the coolant temperature sensor value. It serves to lower the engine rpm.

In addition, the intake air temperature sensor is integrated with the air flow sensor and the intake air temperature sensor alone, both of which is a type of NTC resistance that changes the resistance value depending on the air temperature changes intake into the engine.

On the other hand, the front of the engine is provided with a radiator 20 for circulating the cooling water to cool. A water jacket is installed around the cylinder inside the engine, and the cooling water is circulated therein to cool the engine. If the cooling water is left as it is, it cannot boil and cool. For this reason, the hot cooling water is circulated to the radiator 20 and cooled.

Since the cooling water and the cold air intake in front of the engine room 11 are heat-exchanged, it is necessary to adjust the arrangement of other components so that the air from outside can be guided to the radiator 20 well. In addition, the rear of the radiator 20 is provided with a cooling fan 22 to prevent the hot air stagnation.

In addition, a condenser 24 for condensing the refrigerant of the air-conditioning and heating air conditioners disposed therein is installed in front of the radiator 20, and an interchange cooler 26 is installed above the radiator 20.

An air cleaner 30 is installed at the upper part of the radiator 20, and the air cleaner 30 prevents abrasion by removing dust or soil in the air sucked into the engine, and when air is sucked into the cylinder. It plays a role to prevent noise that occurs.

The air cleaner 30 may be of two types, wet and dry, and the wet type contains oil at the bottom of the air cleaner 30 so that when the inhaled air collides with the oil surface and changes direction, It removes and the purification efficiency reaches about 85-95%.

The dry type is used as, and the wire mesh of about 8 mesh is enclosed in the air cleaner 30. The wire mesh combines the removal of dust and the like and the prevention of fires caused by backfire.

In general, wet type is used for large engines and dry type for small engines. Due to the large increase in resistance due to the adhesion of dust, it is necessary to clean it regularly. When the dust concentration is particularly high, the cyclone separator is used as a precleaner. It is preferable to apply in combination with wet or dry using.

Since the air cleaner 30 is positioned above a predetermined height from the bottom plate 14 on the engine room 11 front side, a support bracket 32 for supporting the air cleaner 30 is provided. The support bracket 32 may fix the air cleaner 30 at a predetermined height by the support 33.

The battery 28 is installed on the bottom plate 14 below the air cleaner 30. The air cleaner 30 is disposed above the predetermined height by the support bracket 32 so as not to overlap each other.

On the other hand, the engine control unit 40 of the agricultural work vehicle according to the invention is installed below the air cleaner (30). More specifically, the engine control unit 40 is preferably installed in close proximity to the lower surface of the air cleaner (30).

1 to 3, the air cleaner 30 is installed to be inclined slightly downward from the upper front of the engine room 11, the air cleaner 30 between the radiator 20 and the front side of the interchange cooler 26. A predetermined clearance is formed along the bottom surface. Therefore, the engine control unit 40 is installed by utilizing this space.

Specifically, the engine control unit 40 may be fixed to the lower surface of the support bracket 32 of the air cleaner 30, in which case, the support bracket 32 may be directly fastened by a bolt or welding method. Can be.

In addition, the engine control unit 40 may be fixedly installed by a fixing bracket 42 which is connected to the support bracket 32. In this case, the fixing bracket 42 is disposed on the bottom surface of the support bracket 32. By being fastened by a bolt or welding method, the engine control unit 40 can be fixed to the support bracket 32.

A dustproof member (not shown) may be further included to prevent the engine control unit 40 from being damaged by vibration. The anti-vibration member is provided between the engine control unit 40 and the support bracket 32 so that the engine control unit 40 may be generated due to continuous collision with the support bracket 32 as the engine control unit 40 vibrates ( It can prevent malfunction or damage of 40).

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to various modifications and changes to the present invention without departing from the spirit and scope of the invention described in the claims described below You can do it. It is therefore to be understood that the modified embodiments are included in the technical scope of the present invention if they basically include elements of the claims of the present invention.

10: Bonnet 11: Engine Room
12: front axle frame 14: bottom plate
20: radiator 22: cooling fan
24: condenser 26: interchange cooler
28: battery 30: air cleaner
32: support bracket 33: support
40: engine control unit 42: fixed bracket

Claims

Bonnet forming the appearance of the engine room;
A radiator installed in front of the engine in the engine room;
An air cleaner installed in front of the radiator; And
And an engine control unit fixed to the support bracket for supporting the air cleaner and installed under the air cleaner.

The method of claim 1,
The engine control unit is an agricultural work vehicle, characterized in that installed in close proximity to the lower surface of the air cleaner.

The method of claim 2,
The engine control unit is an agricultural work vehicle, characterized in that fixed to the support bracket lower surface.

The method of claim 3,
The engine control unit is an agricultural work vehicle, characterized in that fixed installation by the fixing bracket connected to the support bracket.

The method of claim 1,
Agricultural work vehicle further comprises a dustproof member for preventing the engine control unit from being damaged by vibration.