Michele R Roberts

US Patent:

6571191, May 27, 2003

Filed:

Oct 27, 1998

Appl. No.:

09/179788

Inventors:

Christopher S. York - Greenwood IN
Dale E. Thompson - Indianapolis IN
Michele S. Roberts - Greenwood IN

Assignee:

Cummins, Inc. - Columbus IN

International Classification:

G06F 1900

US Classification:

702107, 702104, 702 85, 702188

Abstract:

A system for recalibrating a remote electronic control system, such as an engine control module (ECM), includes a computer maintaining a database of calibration upgrades and a history of recalibrations for specifically identified ECMs. Software routines determine whether the recalibration history includes the latest calibration upgrades, and if not, automatically downloads those upgrades to the ECM. The software also compares an access password for the ECM to entries in a library of acceptable passwords, and if a match therebetween is found access to the ECM is allowed for downloading recalibration information thereto. The system also contemplates a protocol for verifying the integrity of data downloaded from the ECM to the computer. Types of data susceptible to error are identified, and the downloaded information is evaluated to determine if the susceptible types of data are present. If so, and if correctable errors exist, the downloaded trip information is corrected.