Patent · US Expired

Carburetors for internal combustion engines

US4191149A · kind A · utility

5Cited by

4References

7Claims

0Family size

Assignee

Societe Industrielle de Brevets et d'Etudes (S.I.B.E.) · FR

Inventors

Rathindra Dutta · Kaarst, DE
Josef Rosgen · Grevenbroich, DE
Gerd Rosemann · Wittlich, DE

Key dates

Filing date	Dec 16, 1977
Grant date	Mar 4, 1980
Priority date	—
Expiry date	Dec 16, 1997

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S261/06
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A carburetor has a float chamber and a device for adjusting the gaseous pressure in the float chamber. The device comprises a pressure source and a probe contacting the exhaust gas and delivering a signal which is a function of the exhaust gas composition. The device has an airflow pipe connecting the source to atmosphere, a throttle for impressing a head loss to the flow and controlled by the probe and a venturi located in the pipe and connected to the float chamber for giving a pressure which may be out of the range between the source pressure and atmospheric pressure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.