John Joseph Bittner

Author:

John R. Bittner

ISBN #:

0130835358

Author:

John R. Bittner

ISBN #:

0130835927

Author:

John R. Bittner

ISBN #:

0130853828

Author:

John R. Bittner

ISBN #:

0135592461

Author:

John R. Bittner

ISBN #:

0135592860

Author:

John R. Bittner

ISBN #:

0135593026

Author:

John R. Bittner

ISBN #:

0135593107

Author:

John R. Bittner

ISBN #:

0135607981

US Patent:

43667015, Jan 4, 1983

Filed:

Jun 16, 1980

Appl. No.:

6/159512

Inventors:

John M. Bittner - Trenton NJ

Assignee:

Ethyl Corporation - Richmond VA

International Classification:

G01N 3322

US Classification:

73 35

Abstract:

Automatic octane measurements are made very rapidly with standard test engine using an all-electronic control that automatically lowers the fuel-air ratio to bring the knock intensity below standard, then automatically adjusts the compression to bring the knock intensity to standard, then intermittently increases the fuel-air ratio, after the first or second intermittent increase permits automatic compensatory compression changes only in the decreasing direction to compensate for departures from standard knock intensity and conducts these compensatory compression changes at a rate too slow for adequate compensation if the fuel-air ratio increase causes a substantial increase in knock intensity, and then indicating the compression ratio reading after the knock intensity remains standard during two to four successive fuel-air ratio increases. Maximum knock fuel-air ratio is indicated by subsequently automatically lowering the fuel-air ratio an amount corresponding to the fuel-air ratio increases during which knock intensity remained at standard. Finally for some purposes the test engine can be permitted to stabilize at the maximum knock fuel-air ratio.