Mazda's Smart Idle Stop System. SISS
09-30-2008, 05:11 PM
#1
Super Moderator
Thread Starter
Mazda's Smart Idle Stop System. SISS
09-30-2008, 05:54 PM
#2
Registered
Is it only for automatic transmissions due to safety concerns?
For manual transmissions, the system could disengage the clutch and then set the piston position when speed gets to zero, no?
For manual transmissions, the system could disengage the clutch and then set the piston position when speed gets to zero, no?
10-01-2008, 04:06 AM
#5
Super Moderator
Thread Starter
Yep, it is to save fuel, at idle.
I assume it would be for both auto and manual transmissions and is ECU controlled via gas pedal.
I guess the piston stops in the centre or middle position so there is enough capacity by volume to "Squirt" or atomise enough fuel and then ignite, you have to remember this process takes only a few tenths of a second to start up engine.
I assume it would be for both auto and manual transmissions and is ECU controlled via gas pedal.
I guess the piston stops in the centre or middle position so there is enough capacity by volume to "Squirt" or atomise enough fuel and then ignite, you have to remember this process takes only a few tenths of a second to start up engine.
10-01-2008, 09:13 AM
#6
Registered
Join Date: Jun 2007
Location: Sheboygan Falls, Wisconsin
Posts: 1,134
Likes: 0
Received 1 Like
on
1 Post
I take it they couldn't do anything like this for a rotary. Idling a rotary is absolute murder on gas. Something like this would help tremendously. It'll be interesting to see how the direct injection on the 16x helps mileage.
10-01-2008, 10:03 AM
#7
Registered
To better explain the piston stop position, imagine that you're on a bicycle.
Also imagine that the pedal crank is at 12 o'clock and 6 o'clock. It would be tough to get going without pushing off wouldn't it? Now imagine that the pedals are at 9 o'clock and 3 o'clock. It would be much easier to get going from this pedal position. You wouldn't need much less external assistance, like pushing off (or an electric starter in Mazda's case).
Also imagine that the pedal crank is at 12 o'clock and 6 o'clock. It would be tough to get going without pushing off wouldn't it? Now imagine that the pedals are at 9 o'clock and 3 o'clock. It would be much easier to get going from this pedal position. You wouldn't need much less external assistance, like pushing off (or an electric starter in Mazda's case).
10-01-2008, 02:10 PM
#10
10-02-2008, 04:39 PM
#11
Super Moderator
Thread Starter
http://www.autoexpress.co.uk/carrevi...da-3-siss.html
"Mazda plans to use this technology on petrol engines before applying it to a new 1.6-litre rotary unit, due in 2010"
I don't think the writer of this story has this one correct, I am almost certain the SISS will not transfer to the 16X.
"Mazda plans to use this technology on petrol engines before applying it to a new 1.6-litre rotary unit, due in 2010"
I don't think the writer of this story has this one correct, I am almost certain the SISS will not transfer to the 16X.
10-02-2008, 06:17 PM
#14
Registered User
Join Date: Sep 2005
Location: Ocala, FL
Posts: 62
Likes: 0
Received 0 Likes
on
0 Posts
To better explain the piston stop position, imagine that you're on a bicycle.
Also imagine that the pedal crank is at 12 o'clock and 6 o'clock. It would be tough to get going without pushing off wouldn't it? Now imagine that the pedals are at 9 o'clock and 3 o'clock. It would be much easier to get going from this pedal position. You wouldn't need much less external assistance, like pushing off (or an electric starter in Mazda's case).
Also imagine that the pedal crank is at 12 o'clock and 6 o'clock. It would be tough to get going without pushing off wouldn't it? Now imagine that the pedals are at 9 o'clock and 3 o'clock. It would be much easier to get going from this pedal position. You wouldn't need much less external assistance, like pushing off (or an electric starter in Mazda's case).
10-02-2008, 06:57 PM
#15
Huge hole is huge
Thread
Thread Starter
Forum
Replies
Last Post
