Control of internal combustion engine fitted to motor vehicle, detects over-voltage condition arising from alternator fault and reduces engine speed and electrical loading so that electronic equipment is not damaged

摘要

The engine (1) control detects the failure to over-voltage of the alternator (3) and responds by limiting the maximum speed of the engine. The electric loading on the vehicle electrical system is reduced where this is safe, for example the front headlamps (5) remain illuminated. This allows the vehicle to continue without damaging electronic equipment (9) in the vehicle.