Start/Stop Technology

[Supernoodle]

Well not really , because the human mind would turn off the car when it knew it was going to be standing still for quite some time . When moving a few feet and stopping time and again you'd simply just leave the engine running.

A start after an automated should be on the next TDC (poss 2) as there is no need to resynchronise cam and crank signal. The crank sensor is bidirectional, so ECU can track the exact crank angle, even when the engine stops and rocks back.

If you key off, ie were to do a manual stop then start ECU can not assume the crank is where it stopped. In order to determine crank position and engine phase you will need to rotate the crank further to establish syncronisation, at least until you've passed the missing tooth on crank and verified cam pattern.

So a keyed start is not so kind to the components as an automated start.

 

[OneForTheRoad]

A start after an automated should be on the next TDC (poss 2) as there is no need to resynchronise cam and crank signal. The crank sensor is bidirectional, so ECU can track the exact crank angle, even when the engine stops and rocks back.

If you key off, ie were to do a manual stop then start ECU can not assume the crank is where it stopped. In order to determine crank position and engine phase you will need to rotate the crank further to establish syncronisation, at least until you've passed the missing tooth on crank and verified cam pattern.

So a keyed start is not so kind to the components as an automated start.

Think it's just been over thought now tbh ,based on that . Bit silly really . I'm off to bed , up early.

 

[Bobby Dazzler]

I can't remember the last time I wasn't first away from a green light when at the front.

#boyracer

 

[Fastcar155]

Hi , my stop start system never works so I don't miss it.

If car manufactures claim stop start systems don't damage car engines warrant the system far beyond the normal Manufacturer guarantee.