Last post on Oct 26, 2007 at 11:07 AM
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Toyota Prius, Honda Insight, Honda Civic, Hybrid Cars
#333 of 336 Re: prius highway fuel economy [davhan]
May 19, 2006 (9:23 am)
"The first is for maximum torque at low revs, the middle is for standard cruising and the top is for maximum power at high revs...all handled automatically of course."
That is an Atkinson cycle ICE, it doesn't have a lot of torque at low revs. Hence the electric assist.
Your description sounds the same as my 2003 CR-V; computer controlled variable valve timing.
#334 of 336 Still surprisingly torquey though
May 19, 2006 (2:37 pm)
Correct. Nevertheless thanks to the electric motor assistance it has a surprising amount of low end torque. On looking at some other car manufacturer sites the average 1.8 - 2.0l engine has about the same amount of torque as the HCH...about 170nm. So it can take off from the lights quite briskly. It's at higher speeds 110kph and above where it starts to lack power.
#335 of 336 Re: Still surprisingly torquey though [davhan]
May 21, 2006 (6:57 pm)
"So it can take off from the lights quite briskly. It's at higher speeds 110kph and above where it starts to lack power."
It depends upon the battery depletion. It supplies power at all speeds.
#336 of 336 Re: prius highway fuel economy [coalburner]
Oct 26, 2007 (11:07 am)
55 mpg! Wow. I average about 65 mph on traffic-free highway driving and I'm only getting 46 mpg in my 2004 Prius. I'm also having battery troubles, though... so I guess it's time for a service.
Thanks for the info! btw - I put a bunch of interesting stuff on this website. I think it's a good way to get people to see the light and drive a hybrid. Check it out: