Compressed air supplying apparatus for use in heavy construction equipments

• US 20060137345A1
• Filed: 12/20/2005
• Published: 06/29/2006
• Est. Priority Date: 12/23/2004
• Status: Abandoned Application

• Current Assignee: Doosan Infracore Company Limited
• Original Assignee: Doosan Infracore Company Limited
• Inventors: Cho, Seung Bae
• Application Number:
  US11/313,586
• Publication Number:
  US 20060137345A1
• Time in Patent Office: Days
• US Class Current: 60/605.100
• CPC Class Codes: B60T 17/02 Arrangements of pumps or compressors, or control devices therefor
• CPC Class Codes: F02B 21/00 Engines characterised by air-storage chambers
• CPC Class Codes: F02B 33/44 Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
• CPC Class Codes: F02B 37/00 Engines characterised by provision of pumps driven at least for part of the time by exhaust
• CPC Class Codes: F02B 37/16 by bypassing charging air
• CPC Class Codes: F02B 65/00 Adaptations of engines for special uses not provided for in groups F02B61/00 or F02B63/00; Combinations of engines with other devices, e.g. with non-driven apparatus of rotary-piston or oscillating-piston engines F02B53/14; combinations of prime-movers consisting of electric motors and internal combustion engines for mutual or common propulsion B60K6/20
• CPC Class Codes: F02M 35/10144 Connections of intake ducts to each other or to another device
• CPC Class Codes: F02M 35/10157 Supercharged engines
• CPC Class Codes: F02M 35/10229 the intake system acting as a vacuum or overpressure source for auxiliary devices, e.g. brake systems; Vacuum chambers air storage chamber F02B21/00
• CPC Class Codes: F02M 35/164 Heavy duty vehicles, e.g. trucks, trains, agricultural or construction machines
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A compressed air supplying apparatus is provided for, in such vehicles with no air compressor as heavy construction equipments, extracting a portion of compressed air supplied from a turbocharger to an engine to use the extracted air for the purpose of cleaning a vehicle cabin or the like. The apparatus comprises a turbocharger and a bifurcate tube attached to midway of an intake pipe through which the turbocharger supplies compressed air to an intake manifold of an engine. The bifurcate tube is adapted to extract the compressed air from the intake pipe. An air spray device is connected to a distal end of the bifurcate tube so that it can spray the compressed air, if needed, to cleanse a vehicle cabin or other parts of the construction equipments.

Claims

1. A compressed air supplying apparatus for use in engine-driven vehicles with a turbocharger 9, comprising a bifurcate tube 17 connected to an intake pipe 3 through which the turbocharger 9 supplies compressed air to an intake manifold 5 of an engine 1, for extracting the compressed air from the intake pipe 3, and an air spray device 29 connected to the end of the bifurcate tube 17.

2. The apparatus as recited in claim 1, further comprising a check valve 19 provided on the bifurcate tube 17 for permitting flow of the compressed air into the bifurcate tube 17 from the intake pipe 3 but prohibiting air flow in the opposite direction.

3. The apparatus as recited in claim 2, further comprising an accumulator 23 provided on the bifurcate tube 17 between the check valve 19 and the air spray device 29 to keep the pressure in the bifurcate tube 17 constant.

4. The apparatus as recited in claim 1, further comprising a shutoff valve 21 provided on the bifurcate tube 17 for opening or closing the bifurcate tube.

5. The apparatus as recited in claim 1, further comprising an air volume regulator device 35 provided on the engine 1 for regulating a discharge volume of exhaust gases to vary the volume of the compressed air flowing through the intake pipe 3.

6. The apparatus as recited in claim 1, further comprising a cooling device 30 for cooling the compressed air which passing through the bifurcate tube 17.