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1. (WO2017039447) SYSTEM AND METHOD FOR DETECTING AND COUNTERACTING DIESEL ENGINE RUNAWAY.

Pub. No.:    WO/2017/039447    International Application No.:    PCT/NL2016/050611
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Fri Sep 02 01:59:59 CEST 2016
IPC: F02D 41/00
F02D 41/04
F02D 41/22
F02D 31/00
Applicants: DAF TRUCKS N.V.
Inventors: VIJLBRIEF, Thomas
ELLING, Sebastiaan
Title: SYSTEM AND METHOD FOR DETECTING AND COUNTERACTING DIESEL ENGINE RUNAWAY.
Abstract:
A method, device and system for detecting and counteracting a runaway condition in a diesel engine system. The diesel engine system includes an inlet for supplying combustion air to a diesel engine, and an exhaust for relieving the diesel engine from exhaust gas. The diesel engine system further includes an exhaust gas recirculation system for selectively allowing exhaust gas from the exhaust to enter the inlet. A first gas flow path actuator is included in the exhaust gas recirculation system, and a second gas flow path actuator is included in the exhaust. The method, as performed by the system, comprises detection of an actual or potential runaway condition, and in response thereto deprives the diesel engine of oxygen. Depriving of oxygen is performed by opening the first gas flow path actuator and closing the second gas flow path actuator to cause stalling of the diesel engine. The depriving is accomplished by maximizing recirculation of exhaust gasses to the engine and increasing pressure drop over the exhaust for a first predetermined period of time.