tag:blogger.com,1999:blog-5796817627955927863.post7120135778535216620..comments2023-06-04T02:18:45.400-07:00Comments on Electric BMW ActiveE in Silicon Valley: ActiveE Torque MeasurementsMurrayhttp://www.blogger.com/profile/05615584529128840992noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-5796817627955927863.post-56189709566925103722013-09-06T11:50:45.406-07:002013-09-06T11:50:45.406-07:00Hi Murray,
I read your Blog and really like it!
T...Hi Murray,<br /><br />I read your Blog and really like it!<br />Thanks for the picture with the torque you posted. The numbers are quite high so I thoughd about them and I believe that I found an answer:<br />On the posted image the x-Axis has [RPM] as a unit. The measure ends at 4200 RPM. So I think that here is the problem. The ActiveE Website says that the car has its highest torque of 184poundfeet from 0 RPM to 4450 RPM. After that the tourque falls on a dimishing scale. But the posted image does not match was BMW says. When you look on the picture above you see that the starting point where the decrease really takes place (it is a point of dicontinuity) ist not 4.450 RPM - it is around 1.700 RPM. But the RPM is needed to calculate the torque of the vehicle. In the picture above the shown RPMs do not fit the real RPMs of the engine. If you divide 4.450 by 1.700 you get a scaling factor of 2,62. If you divide your measured 490 pound feet tourque through the scaling factor of 2,62 you get (surprise): 187.2 pound feet of tourque. <br />So your ActiveE is above the manufactor information - but not very much.<br />I hope that what I wrote is understandable!<br /><br />Have fun with your ActiveE - I drove it several times and agree that it is a fun car to drive!<br /><br />Best regards<br />HermannHermannFromGermanyhttps://www.blogger.com/profile/03595524842611747518noreply@blogger.comtag:blogger.com,1999:blog-5796817627955927863.post-68512568080301154492013-03-17T07:49:51.562-07:002013-03-17T07:49:51.562-07:00Hi Murray,
I loved reading this piece! Well writte...Hi Murray,<br />I loved reading this piece! Well written!<br /><br />Merlen Hogg<br /><a href="http://www.th-service.no/hms/" rel="nofollow">hms</a>Anonymoushttps://www.blogger.com/profile/02919074554562455003noreply@blogger.comtag:blogger.com,1999:blog-5796817627955927863.post-89182777801862911242013-02-02T17:45:12.153-08:002013-02-02T17:45:12.153-08:00Thanks Tom, I just found this link which is also r...Thanks Tom, I just found this link which is also relevant per the discussion on the ActiveE forum of EV vs non-EV torque numbers, torque at the engine vs torque at the wheel, etc:<br /><br />http://www.greencarreports.com/news/1040764_audi-e-tron-torque-numbers-recalculated-new-output-501-5-lb--ftMurrayhttps://www.blogger.com/profile/05615584529128840992noreply@blogger.comtag:blogger.com,1999:blog-5796817627955927863.post-8046077800291261382013-01-27T12:35:35.818-08:002013-01-27T12:35:35.818-08:00Interesting stuff Murray. I also just added this b...Interesting stuff Murray. I also just added this blog to the ActiveE blog roll on my blog. Sorry I had missed it previously.<br /><br />All the best,<br />Tom Tom Moloughneyhttps://www.blogger.com/profile/00302557992187975325noreply@blogger.com