Driving Tips - Page 2 - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 01-29-2006, 03:11 PM   #11
Registered Member
 
JanGeo's Avatar
 
Join Date: Jan 2006
Posts: 2,442
Country: United States
Send a message via Yahoo to JanGeo
no throttle injectors

Well it depends on my xB with the ScanGauge it seems that if the engine is cold or not burning clean yet - maybe from the GP-7 I am using - the MPG on the ScanGauge seems to indicate that gas is injecting with decelleration even at higher RPMs if the engine is cold. When it is warm it is a function of rpm to get the better MPG - going fast enough put it in neutral and increase the coast time but if the engine is hot and you need to slow down then just back off the pedal and keep it in gear. It will not pump much air through the engine but it does pump some and that is not that great for the cat I am sure but you help lubricate the top end of the piston by sucking some oil up there and keep the coolent and oil circulating to cool the hot spots. Flying airplanes the worse thing you can do with a piston engine is to chop the throttle - the engine cools down too quickly and can lock up on you. Less of a problem with water cooled engines however.

As far as the automatic transmission as I said in another thread today DON'T cut the engine with an automatic - it will stop pumping the oil and you will cook the tranny seals and run the gears dry. The oil pump is driven by the engine side of the torque converter and presure is used to engauge the clutches so no oil pressure then no go - no seals no oil pressure and no go - low oil pressure then slipage.

Diesels keep the ignition turned on or else there is no lubrication to the pistons if the engine is still turning over and the injector oil is shut off. On my Geo with the slipping alternator pulley I used to turn off the engine and keep it in gear - this reduces the electric load on the alternator and allowed the belt to catch and the alternator can still keep charging the battery. Pressing on the throttle caused more engine braking than no throttle. My 65 Rambler it was the other way around - letting more air in reduced engine braking. I guess it depends upon the valve timing.
__________________

JanGeo is offline   Reply With Quote
Old 01-30-2006, 09:32 AM   #12
Registered Member
 
MetroMPG's Avatar
 
Join Date: Dec 2005
Posts: 4,223
Country: United States
found a link to a PDF with

found a link to a PDF with some pretty decent basics on fuel efficient driving techniques. you probably know most of these already, but it never hurts to see what's new since the last time you checked

http://homepower.com/files/featured/111_30.pdf

hat tip to http://evconvert.com
__________________

MetroMPG is offline   Reply With Quote
Old 01-30-2006, 05:07 PM   #13
Registered Member
 
kickflipjr's Avatar
 
Join Date: Sep 2005
Posts: 933
Country: United States
nice list. Better then most

nice list. Better then most I see on the net.
__________________

__________________
2008 EPA adjusted:


Distance traveled by bicycle in 2007= 1,830ish miles
Average commute speed=25mph (yes, that's in a car)
kickflipjr is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuelly API, Remote Update hufman Fuelly Web Support and Community News 6 11-26-2017 11:28 AM
Request: Days Between Fuel-ups artizhay Fuelly Web Support and Community News 5 10-30-2012 04:42 AM
Why Is there No App?! muffetmd Fuelly Web Support and Community News 8 03-11-2012 10:06 AM
File import issue RobAGD Fuelly Web Support and Community News 14 08-10-2009 09:12 AM
Driving Tips kickflipjr Hypermiling 12 01-30-2006 05:07 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 01:36 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.