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.:
Date of Patent:
Feb. 25, 1986
Filed:
Sep. 12, 1984
Takamitsu Okamoto, Sasono, JP;
Keisou Takeda, Sasono, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
A fuel injection carburetor in an internal combustion engine, comprising: a fuel injection valve provided at a position upstream of a throttle valve mounted in an intake passage; and an idling bypass air passage bypassing the throttle valve; wherein the range of fuel spray angle of the fuel injection valve is determined such that the fuel injection valve is disposed in such a manner that a position on the surface of the throttle valve, to which the sprayed fuel reaches, is always located at an opening forward end in the downstream direction of the throttle valve rather than an opening forward end in the upstream direction within the total throttle opening of the throttle valve from the full closing to the full opening, there are provided a bypass air valve of a wax-type provided in the idling bypass air passage and in which the higher the temperature rises, the less the flowing area of the bypass air passage is made, and a hot water passage for circulating the engine coolant from a position adjacent the opening forward end in the downstream direction of the throttle valve and through a wax portion of the bypass air valve of the wax-type, and an outlet of a bypass air passage for the idle adjustment to correct an air flow rate in the idling bypass air passage is provided on an inner wall of the intake passage on the side of the opening forward end in the upstream direction of the throttle valve.