Hybrid Car – More Fun with Less Gas

40 mpg Prius vs 50 mpg European Diesel cars - Page 7

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Posted by Ray O on May 3, 2006, 3:01 am
 


<snipped>


I wouldn't describe the subject of the source of diesel clatter as
controversial.  IMO, "uninformed" is a more accurate description, especially
in the U.S. where diesels are not common in passenger car applications.

Basically, diesel "clatter" is the same sound you get when a gasoline engine
is knocking.  Add different tolerances and you get more noise at idle.
--

Ray O
(correct punctuation to reply)



Posted by Ken on May 25, 2006, 9:33 am
 


There was much discussion in this thread about a diesel hybrid

It turns out that GM of all people is way ahead in devloping hybrid
diesel - in buses. the following links tell the story - diesel, hybrid,
regenerative braking - the lot! 60% gain in economy.

www.shadetreemechanic.com/allison_hybrid_drive.htm

www.gm.com/company/gmability/edu_k-12/9-12/fc_energy/hybrid_allison.html

www.hybrid-vehicles.net/gm-allison-hybrid-bus.htm

I owe it to an Australian electronics magazine - Silicon Chip - which
is running an article in its June issue on this GM - Allison project
which is not pie in the sky - the vehicles are operating in various
parts of the US.


Posted by mailman on May 5, 2006, 2:01 am
 On Tue, 2 May 2006 18:56:36 -0700, "Michael Pardee"


  
Same  engine as the new 407 Hdi coupe   V6  twin tubo>


Yes  the mechanical injector make clatter plus the mechanical injector
pump as well.   The common rail diesel are much quiter than mechanical
injected diesel .   A  interesting point here is that indirect injected
diesel (mech.) is quiter than a direct injected diesel (mech.).

Down under we are paying  between  $A 1.42 to $A 1.44 per litre  for
diesel.








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Posted by Coyoteboy on May 3, 2006, 1:11 pm
 
Michael Pardee wrote:
<snip>

Commonrail diesels are VERY good. Comparable power and better torque
than all but the top end petrol model-mates. They drive less like a
diesel than old TDs and get HUGE economy. Theyre quiet, not quite as
quiet as a petrol I admit, but certainly quieter than an older petrol
engine. This is why ive never seen the point of hybrid as a current
choice of car, maybe in 10 years when theyve matured.

J


Posted by Michael Pardee on May 3, 2006, 4:59 pm
 
Hybrids work at the other end of the driving spectrum. The only advantage
they offer on the open road (where diesels shine) is the ability to reduce
engine size while maintaining passing performance, but in town they reduce
the amount of time a gas or diesel engine is run in the lowest efficiency
ranges. Hybridizing with a turbo diesel power plant is a very attractive
idea - each covering the weaknesses of the other. There is no reason a TD
hybrid 5 passenger sedan couldn't offer more than 100 mpg in town and 80 mpg
on the freeway, at least at 65 mph. Mainly it takes advances in the power
electronics.

Mike



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