A question on current state of stop-start systems.
How do they work?
Am I correct to assume that when the engine is turned off by the system during say a traffic light stop, the ecu is smart enough to :
1.) Stop the crank in such a position that one (assume 4 cyl engine) cylinder is at the end of the compression stroke, start of combustion stroke.
When engine needs to start;
2.) For port injected, the air-fuel mixture is in there, ignite spark plug for that cylinder, engine turns over.
2a.) For DI, inject fuel, ignite spark plug, engine turns over.
The starter motor is not required right? No traditional cranking, just use a spark to set it off?