Camry transaxle sketch or diagram?
Hi,
I haven't seen a sketch or diagram for the Camry transaxle. I know how our Prius transaxle work and figured the Camry was the same. But someone (not a Prius owner) thinks there is an extra planetary gear in the Camry transaxle and just don't know. Has anyone seen a paper, maintenance guide or other sketch that shows the parts of a Camry transaxle? Thanks, Bob Wilson |
Re: Camry transaxle sketch or diagram?
Hi Bob,
The Camry Hybrid has the reduction gear same as Highlander and RX400h. http://www.toyota.co.jp/en/tech/environment/powertrain/hybrid/index.htm Ken@Japan |
Re: Camry transaxle sketch or diagram?
1 Attachment(s)
Originally Posted by bwilson4web
Hi,
I haven't seen a sketch or diagram for the Camry transaxle. I know how our Prius transaxle work and figured the Camry was the same. But someone (not a Prius owner) thinks there is an extra planetary gear in the Camry transaxle and just don't know. Has anyone seen a paper, maintenance guide or other sketch that shows the parts of a Camry transaxle? Thanks, Bob Wilson J |
Re: Camry transaxle sketch or diagram?
Yes, there are 2 electric motor/generators and 2 planetary gear sets.
http://www.fogcity.com/tch_trans.png Will Mayall |
Re: Camry transaxle sketch or diagram?
Originally Posted by mayall
Yes, there are 2 electric motor/generators and 2 planetary gear sets.
http://www.fogcity.com/tch_trans.png Will Mayall The motor speed reduction gear makes a lot of sense and it appears to be a fixed ratio reduction unit. I can see where it extends the range MG2 can contribute motive force. I've added the "Toyota.pdf" file to my records folder. It would be misleading to suggest that this fixed ratio, planetary gear has any 'shifting' capability. It is basicly extending the low-end range of the MG2 over a wider speed range. Excellent! Bob Wilson |
Re: Camry transaxle sketch or diagram?
Very interesting - I did not know a compound gearing was used on the TCH. A tech at the dealer said the TCH uses an isolated cooling circuit for the HSD, independent from the ICE cooling. I am most curious if anyone has any info on the cooling of the TCH. Is the temperature of the HSD lower than the ICE? Heat buildup in the Prius HSD is a limitation and possibly a contributor to the early breakdown of the HSD oil. A few folks have had oil analysis done on the Prius HSD oil at 60K miles, and it showed significant breakdown and loss of viscosity.
|
Re: Camry transaxle sketch or diagram?
Originally Posted by nash
Very interesting - I did not know a compound gearing was used on the TCH. A tech at the dealer said the TCH uses an isolated cooling circuit for the HSD, independent from the ICE cooling. I am most curious if anyone has any info on the cooling of the TCH. Is the temperature of the HSD lower than the ICE? Heat buildup in the Prius HSD is a limitation and possibly a contributor to the early breakdown of the HSD oil. A few folks have had oil analysis done on the Prius HSD oil at 60K miles, and it showed significant breakdown and loss of viscosity.
J |
Re: Camry transaxle sketch or diagram?
Originally Posted by bwilson4web
It would be misleading to suggest that this fixed ratio, planetary gear has any 'shifting' capability. It is basicly extending the low-end range of the MG2 over a wider speed range. Excellent!
http://priuschat.com/index.php?showtopic=20684&st=10 Ken@Japan |
Re: Camry transaxle sketch or diagram?
Hi,
Originally Posted by nash
Very interesting - I did not know a compound gearing was used on the TCH. A tech at the dealer said the TCH uses an isolated cooling circuit for the HSD, independent from the ICE cooling. I am most curious if anyone has any info on the cooling of the TCH. Is the temperature of the HSD lower than the ICE? Heat buildup in the Prius HSD is a limitation and possibly a contributor to the early breakdown of the HSD oil. A few folks have had oil analysis done on the Prius HSD oil at 60K miles, and it showed significant breakdown and loss of viscosity.
Bob Wilson |
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