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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4308837 B1

PDFFull Text
Date of Patent:
Jan. 05, 1982

Filed:

Apr. 03, 1979

Intake system of an internal combustion engine

Applicant:
Inventors:

Hidetaka Nohira, Mishima, JP;

Toshiaki Konomi, Susono, JP;

Hideaki Matsui, Susono, JP;

Assignee:

Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;

Attorney:

Kenyon & Kenyon

Primary Examiner:

Ira S Lazarus

Assistant Examiner:

Carl Stuart Miller

Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123442 ; 123 / ; 123336 ; 123337 ; 261 / ; 261 65 ;
Abstract

An internal combustion engine comprising a carburetor having a throttle valve. A secondary throttle valve is arranged in the intake passage at a position located downstream of the throttle valve of the carburetor. When the engine is operating under a light load, the secondary throttle valve remains fully closed. When the engine is operating under a heavy load, the secondary throttle valve remains fully opened. The intake passage located upstream of the secondary throttle valve is interconnected with the intake passage located downstream of the secondary throttle valve via an auxiliary intake passage having a cross-sectional area which is extremely smaller than that of the intake passage.

Find Patent Forward Citations

Nohira, Hidetaka. (1982). Intake system of an internal combustion engine (U.S. Patent No. 4308837). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4308837

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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