Truck hood engine air induction system
US4971172A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Jun 30, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/164
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a hood for a conventional highway truck, induction air for the engine of the truck is drawn by the engine vacuum into the hood through air inlets therein at the upper corners of the grille opening defined by the front hood reinforcement to avoid the more severe road splash contamination. The air is drawn through several turns of ninety degree or smaller angle, including the inlets disposed perpendicularly to the path of travel, through a vertical duct adjacent the front reinforcement, a horizontal duct adjacent the fenders, a rear vertical duct, and the duct-defining rear reinforcement to a connection with the engine air cleaner. Both of the vertical ducts are provided with small drain holes adjacent their lower ends to permit heavier particles and water to drain therefrom. The ducts have been provided with large cross-sectional areas which, in addition to reducing air flow restriction, provide lower air flow velocity which further enables water and heavier particles to drop out of the air stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.