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Originally Posted by cmavr8
Hi everybody!
2. I was just wondering how efficient pulse and glide with engine on can be.
My sequence will be:
(situation: Cruising at highest gear, engine rpms ~1500)
- switch to the appropriate gear to bring the engine to the lower end of its most efficient area (say 2000rpm)
- accelerate until the engine reaches the high end of the area (say 3000rpm)
- switch to highest gear possible (usually 6th) and let it roll
- when speed goes down, repeat...
Will this be better than steady throttle (not speed) cruising with the same average speed?
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As the engine stays on, and you stay in gear , you're effectively braking - even if the DSG goes into top gear (6th), it's still braking.
Unless you need to brake, I don't see that being more efficient as driving at a steady speed.
For coasting, you'll need the newer DSG7 with BMT in the new Golf
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So during acceleration, instead of letting the transmission change to the next gear as soon as possible, I could change gears so that I always keep the engine between 2-3k rpms. Will this be any good?
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Coupled to a TDi, in my somewhat limited experience the DSG will shift depending on throttle position and possibly engine load.
If it feels it can change up, it will, giving you the best BSFC due to higher load at lower revs.
Take it easy, keep it out of Sports mode, and don't shift down - DSGs don't like that.
Get used to the limited deceleration you get in the highest gear, and make maximum use of that.
Being something of a hypermiler, but not used to automatics nor DSG, I've tried beating it, and failed, tank after tank, despite driving slower than the car's owner ...