This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Chrysler Method of Carburetor Idle Flow Correlation
Annotation ability available
Sector:
Language:
English
Abstract
In the continuing search for reduced exhaust emissions from automotive engines, tighter controls on production carburetor fuel-air ratio delivery became necessary. Idle fuel and airflow measurement assumed major importance due to the influence of idle set points on exhaust emissions and on the part throttle flow curve of the carburetor.
This paper details the development of idle fuel and airflow measurement transfer systems to correlate data between test stations, including the use of carburetors locked in the idle position. Matched sets of sonic flow nozzles are currently in use at each test location as a basis for defining carburetor idle airflow. Fuel flow, using a test fluid developed specifically for this application, is defined by a simple, accurate weight time calibrator.
The current system requires only the transmittal of data between test locations and is now entering its second year of production application.
Recommended Content
Technical Paper | CARBURETOR DESIGN AND CALIBRATION |
Technical Paper | Using The Engine for Exhaust Control |
Technical Paper | “Smart sensing” of Oil Degradation and Oil Level Measurements in Gasoline Engines |
Authors
Citation
Harris, R. and Fraccarolli, A., "The Chrysler Method of Carburetor Idle Flow Correlation," SAE Technical Paper 710169, 1971, https://doi.org/10.4271/710169.Also In
References
- Beckman E. W. Fagley W. S. Sarto J. O. “Exhaust Emission Control by Chrysler-The Cleaner Air Package.” SAE Transactions 75 660107
- Proposed SAE Recommended Practice Carburetor Airflow Reference Standards
- Binder R. C. “Fluid Mechanics.” Englewood Cliffs, N. J. Prentice Hall 1959
- Mooney D. A. “Mechanical Engineering Thermodynamics.” Englewood Cliffs, N. J. Prentice-Hall 1953