# US 2014/0196682 A1 · Pressurized engine enclosure with air filter for an agricultural work vehicle

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- Number: US 2014/0196682 A1
- Document ID: US20140196682A1
- Status: Published application
- Kind: A1
- Application number: 13/741,960
- Filed: 2013-01-15
- Published: 2014-07-17
- Earliest claimed: 2013-01-15
- Assignees: Deere & Company
- Applicants: Deere & Company
- Inventors: Alan Sheidler; Timothy Christensen
- Web page: https://patentgrep.com/patent/US20140196682A1

## CPC

- F02F 7/0021: {Construction}
- A01D 41/1252: {Anti-dust devices}
- F01P 1/00: Air cooling
- F02M 35/0216: {arranged in series, e.g. pre- and main filter in series}
- F02M 35/0223: {by centrifugal forces, e.g. cyclones}
- F02M 35/164: {Heavy duty vehicles, e.g. trucks, trains, agricultural or construction machines}
- F01P 2001/005: {Cooling engine rooms}
- F02F: CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- A01D: HARVESTING; MOWING
- F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28)
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF

## Abstract

An engine enclosure (100, 200) for an agricultural work vehicle has a plurality of walls (114, 210, 216, 218, 230) that surround an internal combustion engine (102, 202) and a fan (122, 236) coupled to an air inlet (120, 238) in the plurality of walls for maintaining the inside of the engine enclosure (100, 200) at a pressure slightly higher than atmospheric pressure.

## Claims

### Claim 1

An engine enclosure (100, 200) for an internal combustion engine (102, 202) comprises a plurality of walls (114, 210, 216, 218, 230) surrounding the internal combustion engine (102, 202), wherein the walls define an air inlet (120, 238) opening into a space between the internal combustion engine (102, 202) and the plurality of walls (114, 210, 216, 218, 230), and the fan (122, 236) coupled to the air inlet (120, 238) to provide air under pressure to the space between the internal combustion engine (102, 202) and the plurality of walls (114, 210, 216, 218, 230), and to maintain the air in the space at a pressure above the air pressure outside the plurality of walls (114, 210, 216, 218, 230).

### Claim 2 (depends on 1)

The engine enclosure (100, 200) of claim 1, further comprising a combustion air conduit (116, 228) coupled to the internal combustion engine (102, 202) to supply the internal combustion engine (102, 202) with air for internal combustion, wherein at least a portion of said combustion air conduit (116, 228) is disposed inside the engine enclosure (100, 200).

### Claim 3 (depends on 2)

The engine enclosure (100, 200) of claim 2, wherein the combustion air conduit (228) extends through a wall of the plurality of walls (114, 210, 216, 218, 230).

### Claim 4 (depends on 3)

The engine enclosure (100, 200) of claim 3, wherein an end of the combustion air conduit (228) is disposed outside of the engine enclosure (100, 200) to receive ambient air from the environment outside of the engine enclosure (100, 200) and to conduct the ambient air through the wall of the plurality of walls (114, 210, 216, 218, 230) and into the internal combustion engine (102, 202).

### Claim 5 (depends on 1)

The engine enclosure (100, 200) of claim 1, wherein the fan (122, 236) is disposed to receive ambient air from outside the engine enclosure (100, 200), and to convey the ambient air into the air inlet (120, 238).

### Claim 6 (depends on 5)

The engine enclosure (100, 200) of claim 5, wherein an air filter (124, 240) is disposed between the fan (122, 236) and the ambient environment to filter ambient air before it is conveyed into the air inlet (120, 238).

### Claim 7 (depends on 1)

The engine enclosure (100, 200) of claim 1, further comprising a heat exchanger (246) disposed outside of the engine enclosure (100, 200), and configured to receive ambient air (254) from the ambient environment outside of the engine compartment, to transfer heat to the ambient air (254) and to transmit now-heated ambient air back into the ambient environment outside of the engine compartment.

### Claim 8 (depends on 7)

The engine enclosure (200) of claim 7, further comprising a first engine coolant conduit (244) coupled to and extending between the internal combustion engine (202) and the heat exchanger (246) to conduct hot engine coolant from the internal combustion engine (202) to the heat exchanger (246) for cooling, and a second engine coolant conduit (252) coupled to and extending between the internal combustion engine (202) and the heat exchanger (246) to conduct engine coolant from the heat exchanger (246) back to the internal combustion engine (202) after cooling.

### Claim 9 (depends on 8)

The engine enclosure (200) of claim 8, wherein the first engine coolant conduit (244) and the second engine coolant conduit (252) extend through a wall (210) of the engine enclosure (200).

### Claim 10 (depends on 1)

The engine enclosure (100, 200) of claim 1, further comprising a gearbox (104, 204) disposed inside the plurality of walls (114, 210, 216, 218, 230) and coupled to the internal combustion engine (102, 202) to be driven thereby.

### Claim 11 (depends on 10)

The engine enclosure (200) of claim 10, further comprising an output drive shaft (220, 222) coupled to and driven by the gearbox (204).

### Claim 12 (depends on 11)

The engine enclosure (200) of claim 11, wherein the output drive shaft (220, 222) extends through a wall (216) of the plurality of walls (114, 210, 216, 218, 230).

### Claim 13 (depends on 12)

The engine enclosure (200) of claim 12, wherein the output drive shaft (220, 222) is coupled to and drives a driven machine (224, 226) disposed outside of the plurality of walls (114, 210, 216, 218, 230).

### Claim 14 (depends on 1)

The engine enclosure (100, 200) of claim 1, further comprising an air vent (132, 256) extending from a wall of the plurality of walls (114, 210, 216, 218, 230) and configured to communicate air from inside the engine enclosure (100, 200) to the ambient atmosphere outside of the engine enclosure (100, 200) thereby preventing overpressure of the engine enclosure (100, 200).

### Claim 15 (depends on 1)

The engine enclosure (100) of claim 1 wherein the plurality of walls (114) enclose a turbocharger (106) that is coupled to the internal combustion engine (102) to pressurize combustion air for the internal combustion engine (102).

### Claim 16 (depends on 1)

The engine enclosure (100, 200) of claim 1, wherein the fan (122, 236) is not disposed to impel air through an engine coolant heat exchanger.

### Claim 17 (depends on 1)

The engine enclosure (100, 200) of claim 1, wherein the air inlet (120, 238) is not disposed to communicate air passing through an engine coolant heat exchanger into the engine enclosure (100, 200).