US 7,207,172 B2 · Method for ventilating a working machine, and such a working machine

Abstract

A working machine includes an engine compartment, an engine hood, an internal combustion engine arranged in the engine compartment and an exhaust system, which extends from the engine out of the engine compartment via the engine hood. The exhaust system is provided with an air intake for admitting air from the engine compartment into the exhaust system and entraining the air together with the exhaust gases. The air intake includes an air baffle element, which leads the air into an essentially central area in an outlet duct, in which the exhaust gases are led out, in such a way that the air is entrained out of the engine compartment by the exhaust gases through an ejector effect which the exhaust gases exert on the air in the outlet duct.

Claims20

Dependent claims

A method of ventilating an engine compartment of a working machine, which in addition to the engine compartment comprises an engine hood, an internal combustion engine arranged in the engine compartment and an exhaust system, the exhaust system extending from the engine out of the engine compartment via the engine hood, comprising:

admitting air from the engine compartment into the exhaust system through an air intake;
entraining the air together with exhaust gases from the internal combustion engine;
the air being admitted essentially centrally into an outlet duct of the exhaust system;
leading the exhaust gases into the outlet duct around the admitted air such that the admitted air is entrained out of the engine compartment by the exhaust gases through an ejector effect that is produced by the exhaust gases.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

11/163,246Filed 11 Oct 2005 · continuation

Priority

SE 030112316 Apr 2003

Published

US 2006/0288696 A128 Dec 2006

Granted

24 Apr 2007

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

F01N 13/082
Other arrangements or adaptations of exhaust conduits: of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or…
B62D 25/10
Front or rear portions: bonnets or lids , e.g. for trucks, tractors, busses, work vehicles
F01P 5/08
Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers: use of engine exhaust gases for pumping cooling-air
F01N 3/22
Characterised by methods of operation; Control: control of additional air supply only, e.g. using by-passes or variable air pump drives

Method for ventilating a working machine, and such a working machine

Life of this patent

Method for ventilating a working machine, and such a working machine

Life of this patent

Abstract

Claims20