Vehicle computer system with data backup

US9694827B2 · kind B2 · utility

Assignee

• PACCAR Inc · US

Inventors

• Phu Vi Tran · Renton, US
• David Randall Wrigley · Kirkland, US
• Suresh Kumar · Bellevue, US
• Zachary Slaton · Seattle, US
• Michael Russell · Kirkland, US

Key dates

• Filing date: Dec 19, 2014
• Grant date: Jul 4, 2017
• Expiry date: Dec 19, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F11/1469
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An on-board vehicle computing system stores values in a memory of a first engine control unit (ECU) and stores corresponding backup values in a memory of a second ECU. In this way, the second ECU provides data backup functionality for the first ECU's data. The system may retrieve a backup value from the first ECU and restore the corresponding value in the second ECU using the backup value. In one illustrative scenario, if an original engine ECU (EECU) fails and a replacement EECU is installed, the system can retrieve backup values for vehicle speed limiter (VSL) parameters from memory in a cab ECU (CECU) and update the corresponding data in the replacement EECU with the backup values.