Why 3 years after the BMW 318d is a question yet to be answered?
Wayne Gerdes – CleanMPG
– Oct. 11, 2008
The 308 w/ Stop/Start is rated at 57 mpgUS combined.
Peugeot will include a mild hybrid stop/start system in its 1.6L HDi 308 with plans to equip upwards of 1,000,000 vehicles with the system by 2011.
Like all hybrids, Peugeot’s “micro-hybrid” shuts down the engine whenever the vehicle comes to a stop and then restarts almost instantaneously on demand.
The 308 w/ Stop/Start works as follows:
- During braking the engine shuts down for speeds of 3 mph and lower.
- The engine remains on standby for as long as the brake pedal is applied.
- When the brake pedal is released, the engine restarts automatically and instantaneously, in a manner that is totally transparent for the vehicle occupants.
The system can be deactivated by the driver at any time by pressing the “eco off” button -- conveniently located on the dashboard.
During operation, the system continually checks a large number of parameters to determine when the engine can be put into standby. It monitors engine temperature, Battery State of Charge, outside temperature and whether or not reverse is engaged. The Stop/Start system operates at all temperatures -- even those below zero.
The system is designed around a reversible alternator capable of approximately 4 kW of output. It functions as both starter and alternator in lieu of the traditional, separate devices. The advantages of this system include silent operation, faster starts, and energy recovery during decelerations through regenerative braking.
Peugeot’s STOP/START technology reduces the 308’s fuel consumption by up to 9% in the New European Drive Cycles (NEDC).