Re: 2003 Honda Accord 4 cyl gas mileage on the highway
In article <uc46i1dani1j10hvtrqumkhuooolutm3bl@4ax.com>, flobert <nomail@here.NOT> wrote:
>Dunno if this last paragraph was directed at me or not. Engine is most >efficient at arond its peak torque area. (at least for non vtec >engines) I think that is close, but at peak torque, most if not all engines go into fuel enrichment. So, they won't be terribly efficient there. Highest efficiency is typically about 20% or so below the peak torque for that rpm judging from the fair number of brake specific fuel consumption maps I've seen. That's still a very high throttle setting which you won't see in typical cruise. |
Re: 2003 Honda Accord 4 cyl gas mileage on the highway
On Sat, 10 Sep 2005 21:49:11 GMT, dm@nospam.com (Dave) wrote:
>In article <uc46i1dani1j10hvtrqumkhuooolutm3bl@4ax.com>, flobert <nomail@here.NOT> wrote: > >>Dunno if this last paragraph was directed at me or not. Engine is most >>efficient at arond its peak torque area. (at least for non vtec >>engines) > >I think that is close, but at peak torque, most if not all engines >go into fuel enrichment. So, they won't be terribly efficient >there. Highest efficiency is typically about 20% or so below the >peak torque for that rpm judging from the fair number of brake >specific fuel consumption maps I've seen. That's still a very high >throttle setting which you won't see in typical cruise. Possibly a difference between US and EU tunes |
Re: 2003 Honda Accord 4 cyl gas mileage on the highway
> <Rob> wrote in message news:4dvqh1pinsv24o2bu5vb004dpq8gsd9034@4ax.com... > > Just thought this gas mileage story might be worth noting for some > > Honda Accord buyers. > > > > I just took my first long ride with this car this past weekend from > > Houston, Texas to Austin, Texas and back. I used cruise control 99 > > percent of the time and had 2 adults, 2 teenagers and baggage and air > > conditioning 100 percent of the time. I locked in the cruise control > > at about 66 or 67 mph (speed limit said 70) and just stayed mostly in > > the right lane to allow cars/trucks to pass me. Why not keep up with the pace of traffic rather then being an hazard? -- Donald Rumsfeld: "If you're asking if there's a direct link between 9/11 and Iraq, the answer is no." http://msnbc.msn.com/id/4865948/ On May 01, 2003, President Bush declared that, "Major combat operations in Iraq have ended." "I'm the commander -- see, I don't need to explain -- I do not need to explain why I say things. That's the interesting thing about being the president. Maybe somebody needs to explain to me why they say something, but I don't feel like I owe anybody an explanation. " - George "Dubya" Bush |
Re: 2003 Honda Accord 4 cyl gas mileage on the highway
Elmo P. Shagnasty wrote:
> In article <4nh3v2-pso.ln1@new.helps.com>, jdhoward@helps.com wrote: > > >>To get that economy, I use no air >>conditioning, no cruise control > > > ahem. Your BEST mileage will be when using cruise control. > Not neccessarily. Cruise control increases the throttle opening for any slight incline. Practiced fuel economy drivers will let a little speed bleed of on modest uphill inclines and then let it build back up going down the other side. For *most* drivers, cruise control can improve fuel economy. However, for those rare drivers who have studied the art of fuel economy maximization ... ya can do better. John |
Re: Honda CR-V rotor lifespan
Ralph wrote:
> The dealership says my sister's rotors must be replaced 'because they're > rusting'. > > The CR-V has 60,000 km on it. Is this normal wear? > > Your expert opinion is invited... thanks, Jack. > > BZZZZT! Yellow flag scam possibilities. Rust is not a reason to replace rotors. Insufficient thickness, deep groves and warping are all possible reasons for replacement. Old story, old scam. John |
Re: 2003 Honda Accord 4 cyl gas mileage on the highway
flobert wrote:
> On Fri, 09 Sep 2005 18:25:55 -0400, "Elmo P. Shagnasty" > <elmop@nastydesigns.com> wrote: > > >>In article <efn3i15adugoiooa593scpffimo9mth3m7@4ax.com>, >>flobert <nomail@here.NOT> wrote: >> >> >>>>So you're keeping your throttle at exactly the same position, manually, >>>>and if you go up or down a hill and your speed changes dramatically, so >>>>be it? >>> >>>I say up front i ahven't used cruise control in years, except for once >>>last week. My vehicles don't have it, i don't use it. I used it on my >>>wifes work van, a 96 T+C. Before this, my last experiance was with a >>>03 buick century back in 03 (a rental car). >> >>So you're saying you have very little experience with cruise control. > > I'm saying i have limited experiance, but with that, i pay a lot more > attention to what its doing - its not something i take for grated, and > ignore as a backgroud part of driving' > >>I also noticed that you avoided answering my question, so I'll ask it >>again: >> >>So you're keeping your throttle at exactly the same position, manually, >>and if you go up or down a hill and your speed changes dramatically, so >>be it? > > no, i'm not. If you read what I said, I vary the cars speed, work with > the grade (and with the road thats comming up - something NO cruise > control can do) anticipate, etc. Exactly what does this entail? And doesn't traffic interfere with your careful anticipation? People doing a constant 50 around here are in danger of being crushed by Yugos running on one cylinder. |
Re: 2003 Honda Accord 4 cyl gas mileage on the highway
> >>
> >>>To get that economy, I use no air > >>>conditioning, no cruise control > >> > >>ahem. Your BEST mileage will be when using cruise control. > > > > > > You'd think so, but experimentally, in a lot of different cars doing > > economy runs, its not. Cruise control is just to keep the car at a > > constant speed, no to do it efficiently. > > > i was kinda disappointed in the mileage my 98 civic CX got going from LA > to laughlin nevada and back. > > if i would have taken it easy and cruised with traffic at 70-75mph, i > might have gotten more than my usual 32mpg. > > but no- i had a lead foot. some of it wasnt my fault.. some grades are > so steep i had to drop it into fourth and floor it just to keep at > 80mph. 5th gear was useless, the car couldnt keep up. speedo kept > dropping, even with it floored. > > and of course, i had the A/C blasting in that 114 degree desert heat, > too. the mojave desert gets damned hot during the day. > > so to reiterate: thats uphill, several thousand foot climbs (2000-5000 > feet at a time), A/C blasting, pedal to the metal in 4th gear, doing > 80mph uphill. and the temp gauge stayed below halfway! thank gawd for > mobil1 5w30. It was probably the A/C and the desert heat that sapped a lot of the power. In 4th gear, while climbing mountain (in Hamshire & Vermont) I'm able to maintain 105 mph, but that's on a nice cool (65 degree) day with no AC equipped. If you're racing up a hill and your speed is under 100mph, 3rd would be the preferred gear, instead of 4th. While climbing a particularly steep hill in 3rd gear at high speed, frequently I'd have to pass on the right (those pick-up drivers have a lot of attitude, especially when there's a small car bugging their ass on the left lane). 30 mpg is about right for aggressive driving situation and slowing the speed down to 50 mph would return a huge improvement on fuel consumption (like 40 mpg or 50mpg on a cool day with fairly level grade). Also, after 250,00km of driving, I've yet to see my temperature gage go beyond the 2/5 mark. The big engine compartment with lots of free space helps. Pars 98 Civic Hatch > > downside? 25mpg. |
Re: 2003 Honda Accord 4 cyl gas mileage on the highway
On Sat, 10 Sep 2005 16:03:21 GMT, JXStern <JXSternChangeX2R@gte.net>
wrote: >Been driving a mixed route with a 500 foot rise through the Sepulveda >pass recently, ought to measure my mileage again, doesn't seem all >that different. Seems a mile or two better! J. |
Re: 2003 Honda Accord 4 cyl gas mileage on the highway
JXStern <JXSternChangeX2R@gte.net> wrote in
news:ifici1p4eqs0att87ptl00eh97td4ncgr2@4ax.com: > On Sat, 10 Sep 2005 16:03:21 GMT, JXStern <JXSternChangeX2R@gte.net> > wrote: >>Been driving a mixed route with a 500 foot rise through the Sepulveda >>pass recently, ought to measure my mileage again, doesn't seem all >>that different. > > Seems a mile or two better! > > J. > > i got 16km per litre last week on the highway in my 99 accord |
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