Work vehicle

Patent metadata

Field	Value
Publication number	US-9309643-B2
Application number	US-201414363848-A
Country	US
Kind code	B2
Filing date	Mar 31, 2014
Priority date	Mar 31, 2014
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

A wheel loader is provided with a top plate, a plate-like member, a diesel particulate filtering device, and a first duct. The top plate has a first outdoor air intake port. The plate-like member is disposed below the first outdoor air intake port. The diesel particulate filtering device is disposed below the plate-like member. A first end part of the first duct is positioned to the rear of the diesel particulate filtering device. A second end part of the first duct is positioned inside the cooling compartment. A connector is disposed in an air flow generated between a gap and the first end part.

First claim

What is claimed is:

1. A work vehicle comprising:
an engine;
an engine compartment containing the engine;
a cooling compartment disposed to the rear of the engine compartment;
a partition wall partitioning the engine compartment from the cooling compartment;
a top plate having an outdoor air intake port and defining an upper surface of the engine compartment;
a plate-like member extending forward from the partition wall and disposed below the outdoor air intake port;
a first member disposed below the plate-like member inside the engine compartment;
a duct arranged to pass through the partition wall, the duct having a first end part positioned to the rear of the first member inside the engine compartment, and a second end part positioned inside the cooling compartment, the first end part opening inside the engine compartment and the second end part opening inside the cooling compartment;
a cooling fan configured to exhaust air from the cooling compartment and disposed inside the cooling compartment;
a cooling object member disposed in an air flow generated between the first end part and a gap between the first member and the plate-like member.

2. The work vehicle according to claim 1 , wherein
the first member has a tubular shape.

3. The work vehicle according to claim 1 , wherein
the first member extends in the vehicle width direction.

4. The work vehicle according to claim 1 , further comprising
an exhaust gas post-processing device configured to process exhaust gas from the engine, wherein
the first member is a member that configures the exhaust gas post-processing device.

5. The work vehicle according to claim 1 , wherein
the first end part opens toward the first member.

6. The work vehicle according to claim 1 , wherein
the second end of the duct opens downwards.

7. The work vehicle according to claim 1 , wherein
the first member is a diesel particulate filtering device.

8. The work vehicle according to claim 1 , wherein
the first member is a diesel oxidation catalyst.

9. The work vehicle according to claim 1 , wherein
a center position of the first end part in the vertical direction is positioned higher than a center axis of the first member.

10. The work vehicle according to claim 1 , wherein
the top plate has a first sloping part sloping downward toward the rear; and
the outdoor air intake port is formed in the first sloping part.

11. The work vehicle according to claim 1 , wherein
the plate-like member slopes downward toward the rear.

12. The work vehicle according to claim 3 , further comprising
an exhaust gas post-processing device configured to process exhaust gas from the engine, wherein
the first member is a member that configures the exhaust gas post-processing device.

13. The work vehicle according to claim 12 , wherein
the first end part opens toward the first member.

14. The work vehicle according to claim 13 , wherein
the second end of the duct opens downwards.

15. The work vehicle according to claim 14 , wherein
the first member is a diesel particulate filtering device.

16. The work vehicle according to claim 14 , wherein
the first member is a diesel oxidation catalyst.

17. A work vehicle comprising:
an engine;
an engine compartment containing the engine;
a cooling compartment disposed to the rear of the engine compartment;
a partition wall partitioning the engine compartment from the cooling compartment;
a top plate having an outdoor air intake port and defining an upper surface of the engine compartment;
a plate-like member extending forward from the partition wall and disposed below the outdoor air intake port;
a first member configured to be an exhaust gas post-processing device for processing exhaust gas from the engine, the first member being disposed below the plate-like member inside the engine compartment, the first member extending in a vehicle width direction;
a duct having a first end part positioned to the rear of the first member inside the engine compartment, and a second end part positioned inside the cooling compartment, the first end part opening toward the first member and the second end part opening downward;
a cooling fan configured to exhaust air from the cooling compartment and disposed inside the cooling compartment; and
a cooling object member disposed in an air flow generated between the first end part and a gap between the first member and the plate-like member,
a center position of the first end part in the vertical direction being positioned higher than a center axis of the first member.

18. The work vehicle according to claim 17 , wherein
the top plate has a first sloping part sloping downward toward the rear; and
the outdoor air intake port is formed in the first sloping part.

19. The work vehicle according to claim 18 , wherein
the plate-like member slopes downward toward the rear.

20. A work vehicle comprising:
an engine;
an engine compartment containing the engine;
a cooling compartment disposed to rearward of the engine compartment in a longitudinal direction of the work vehicle;
a partition wall partitioning the engine compartment from the cooling compartment;
a top plate having an outdoor air intake port and defining an upper surface of the engine compartment;
a plate-like member disposed inside the engine compartment below the top plate, the plate-like member extending below the outdoor air intake port and beyond the outdoor air intake port in forward and rearward directions of the work vehicle;
a first member disposed below the plate-like member inside the engine compartment;
a duct having a first end part positioned to the rear of the first member inside the engine compartment, and a second end part positioned inside the cooling compartment;
a cooling fan configured to exhaust air from the cooling compartment and disposed inside the cooling compartment;
a cooling object member disposed in an air flow generated between the first end part and a gap between the first member and the plate-like member.

21. The work vehicle according to claim 20 , wherein
the top plate and the plate-like member are configured and arranged to diverge from each other in a vertical direction as a forward end of the plate-like member is approached from a rearward end of the plate-like member.

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Yamagoe Yosuke

Classifications

• B60Y2200/415

  Wheel loaders · CPC title

• F01N3/103

  Oxidation catalysts for HC and CO only · CPC title

• E02F9/0866 Primary

  Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment · CPC title

• F01N2590/08

  for heavy duty applications, e.g. trucks, buses, tractors, locomotives · CPC title

• F01N3/021

  by means of filters · CPC title