Work vehicle

• US 10,214,247 B2
• Filed: 09/02/2016
• Issued: 02/26/2019
• Est. Priority Date: 10/20/2015
• Status: Active Grant

• Current Assignee: Yanmar Power Technology Co., Ltd. (Yanmar Holdings Co., Ltd.)
• Original Assignee: Yanmar Company Limited (Yanmar Holdings Co., Ltd.)
• Inventors: Watabe, Kenji, Takii, Daisuke, Oshige, Yoshiferu
• Primary Examiner(s): Evans, Bryan A
• Application Number:
  US15/769,681
• Publication Number:
  US 20180304936A1
• Time in Patent Office: 907 Days
• CPC Class Codes: B60K 11/00 Arrangement in connection with cooling of propulsion units heating the interior space B60H; cooling internal combustion engines per se F01P
• CPC Class Codes: B60K 11/04 Arrangement or mounting of radiators, radiator shutters, or radiator blinds B60K11/085 takes precedence
• CPC Class Codes: B60K 11/08 Air inlets for cooling; Shutters or blinds therefor radiator or grille guards B60R19/52
• CPC Class Codes: B60K 13/04 concerning exhaust collecting exhaust gases with central suction systems not forming part of vehicles, e.g. in workshops or tunnels B08B15/002, otherwise along carriageways E01C1/005; extensions for melting snow on roads E01H5/00, E01H6/00; exhaust or silencing apparatus for internal combustion engines per se F01N; pipes, joints or supports therefor F16L
• CPC Class Codes: B60K 2015/0496 the fuel inlet being arranged on the top of the fuel tank
• CPC Class Codes: B60Y 2200/221 Tractors
• CPC Class Codes: B62D 25/12 Parts or details thereof locks E05B, E05B83/16; devices for holding open E05C17/00, e.g. while carrying oversize objects E05C17/042; hinges E05D; counterbalancing means E05F; checks, stops, buffers E05F5/00; springs, e.g. pneumatic springs F16F
• CPC Class Codes: B62D 49/06 adapted for multi-purpose use
• CPC Class Codes: F01N 2260/022 using air
• CPC Class Codes: F01N 2590/08 for heavy duty applications, e.g. trucks, buses, tractors, locomotives
• CPC Class Codes: F01N 3/02 for cooling, or for removing solid constituents of, exhaust by means of electric or electrostatic separators F01N3/01 ; mixing air with exhaust in tailpipes F01N13/082, F01N13/20
• CPC Class Codes: F01N 3/021 by means of filters
• CPC Class Codes: F01P 1/06 Arrangements for cooling other engine or machine parts
• CPC Class Codes: F01P 11/10 Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
• CPC Class Codes: F01P 5/06 Guiding or ducting air to, or from, ducted fans

Abstract

A work vehicle such as a tractor including a cooling fan (12a) arranged in front of the vehicle'"'"'s engine main body (1), and is configured to feed air to the engine main body. The work vehicle further includes a DPF (19), which is arranged on one side of the engine main body and purifies exhaust gas exhausted from the engine main body, and an engine hood (7), which covers the engine main body, the cooling fan, and the DPF. An outside air intake port (21) is formed in both side surfaces of the engine hood at a position further forward than the cooling fan. On both side surfaces of the engine hood, a first opening (30) capable of exhausting air inside the engine hood in a direction away from the vehicle'"'"'s operation seat in side view is formed in a position facing the DPF in the lateral direction.

Claims

1. A work vehicle comprising:

an engine main body;

a cooling fan arranged in front of the engine main body, and configured to feed air to the engine main body;

an exhaust gas purification device arranged on one of left and right sides of the engine main body, and configured to purify exhaust gas exhausted from the engine main body;

an engine hood that covers the engine main body, the cooling fan, and the exhaust gas purification device; and

an operation seat arranged behind the engine hood, wherein

an outside air intake port is formed in at least one of left and right side surfaces of the engine hood, at a position further forward than the cooling fan,

on at least one of the left and right side surfaces of the engine hood, a first opening capable of exhausting air inside the engine hood in a direction away from the operation seat in side view is formed in a position facing the exhaust gas purification device in a lateral direction thereof,

a second opening having a shape elongated in a vehicle width direction is formed in a position above a rear of the engine hood and in front of the operation seat, the second opening being capable of exhausting the air inside the engine hood in a direction away from the operation seat in side view, and

a closing part is provided in a middle position of the second opening relative to the vehicle width direction, and a direction of the air passing through the second opening is divided into left and right by the closing part.

2. The work vehicle according to claim 1, wherein

a plurality of first fins, each having a surface inclined in such a manner as to be further forward as it gets closer to outside from inside of the engine hood, are arranged and aligned in the first opening.

3. The work vehicle according to claim 1, wherein

a plurality of second fins, each having a surface inclined in such a manner as to be further forward as it gets closer to outside from a middle relative to the vehicle width direction, are arranged and aligned in the second opening.

4. The work vehicle according to claim 2, wherein

a plurality of second fins, each having a surface inclined in such a manner as to be further forward as it gets closer to outside from a middle relative to the vehicle width direction, are arranged and aligned in the second opening.