Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Exhaust gas recirculation engine for high altitude use










Image Number 3 for United States Patent #4150648.

Disclosed is an exhaust gas recirculation engine for high altitude use. The engine comprises an exhaust gas recirculation control valve device communicating an intake manifold with an exhaust manifold for circulating a part of the exhaust gas for reducing harmful NO.sub.x contaminants contained in the exhaust gas, which device is actuated by vacuum supplied from a vacuum port disposed at a position adjacent to a throttle valve of a carburetor, a reservoir tank for storing a vacuum; a control valve device for controlling the delivery of the vacuum from the reservoir tank; and an altitude compensating device for actuating the control valve device in accordance with the altitude.Utilizing the above-described engine, exhaust gas is recirculated for a predetermined interval of time after the throttle valve has been opened at a level which is more than the predetermined level during high altitudes. However, exhaust gas is stopped from being recirculated as soon as the throttle valve is opened to the predetermined level during low altitudes. As a result, the amount of harmful NO.sub.x contaminants contained in the exhaust gas can always be maintained at a low level.








 
 
  Recently Added Patents
Battery structures and related methods
Wristwatch
Automated macular pathology diagnosis in three-dimensional (3D) spectral domain optical coherence tomography (SD-OCT) images
Bundled flexible cable with water resistant structure
Carbon blacks having low PAH amounts and methods of making same
Coating composition, and a process for producing the same
Method and apparatus for controllable communication
  Randomly Featured Patents
Methods and apparatus for monitoring cardiac output
Railroad maintenance-of-way personnel warning system apparatus and method therefor
Enhanced interface thermoelectric coolers using etched thermoelectric material tips
Fixed station receiver for MIMO communication system and uplink adaptation method thereof
Methods for selecting a collection of single nucleotide polymorphisms
Match performance .22 caliber cartridge
Motorcycle tire
Sweeping machine brush mounting assembly
Polyamide, polyimide, and polyamide-imide polymers and copolymers using 3,5-diamino-t-butylbenzene
Motorized doll