Moisture-removing low-restriction air intake system
AssigneePACCAR Inc
InventorWilliam R. Warf
Life of this patent
Estimating the term…
Abstract
An air intake system for a motor vehicle having a cab and an internal combustion engine with an air cleaner, comprising a substantially vertical snorkel pipe free from internal obstructions and having an obstruction-free forced air cap at its upper end. A footpipe is connected directly to the lowest end of the snorkel pipe. The footpipe has a sharp right angle bend directly below the snorkel pipe, an elevated horizontal outlet leading to the air cleaner, and air-impeding water drain means at the lowest point of the bend, which forms a water trap, for removing moisture which enters the air intake system.
Claims5
A moisture-removing, low-restriction, engine-air intake for a truck having a cab and an internal combustion engine with an air cleaner supplying cleaned air to the engine, comprising:
- an obstruction-free, substantially vertical pipe portion behind the cab, said vertical pipe portion having an inlet end positioned generally above the upper end of the cab and an interior passage free from internal structures and obstructions extending down to
- a footpipe portion defining a substantially right angle passageway leading from the vertical pipe portion to a horizontal outlet below said cab and connected to said air cleaner, said footpipe portion having a sunken water-trap on its bottom where said right angle becomes horizontal, said water-trap being vertically in line with the lower portion of said vertical pipe portion and a bottom wall leading upwardly therefrom to said outlet, the abrupt change in direction of flow of the air at said right angle tending to separate entrained water from the air and deposit it in said water-trap,
- an obstruction-free forced-air cap on said inlet end,
- and
- drain means in said water-trap for evacuating collected water from said air-trap without leaking any substantial amount of air therefrom.
An air intake conduit for a motor vehicle having a cab with a substantially vertical rear wall and an internal combustion engine with an air cleaner from which air enters the engine, comprising:
- a substantially vertical pipe portion free from internal obstructions and having an obstruction-free forced air cap at its upper end, located just to the rear of said cab and extending above and below said cab,
- a footpipe portion connected directly to the lowest end of said vertical pipe portion and having a sharp right angle bend directly below the vertical pipe portion and an elevated horizontal outlet leading to the air cleaner, and
- air-impeding, water drain means at the lowest point of said bend for removing moisture which enters said air intake conduit and is separated from the air at said bend by virtue of the sharp change of direction.
A moisture-removing, engine- air intake for a truck powered by an internal combustion engine and having a cab, comprising:
- conduit means behind said cab having a long internally unobstructed vertical passage with an unobstructed air intake cap at its upper end and a sharply curved right angle at the lower end of said passage leading horizontally to said engine, whereby moisture is removed from the incoming air at said right angle,
- water trapping means just below and at the end of said right angle for collecting the removed moisture, and
- drain means for draining water from said trapping means without passing any substantial amount of air therethrough.
Dependencies are inferred from the claim text.