[home][rumors and news][model release matrix][dealer network][desktop calendar][exhaust notes][tov forums][links][search][sponsors][garage][login]

Tire Rack Upgrade Garage
 Search for a Dealer:
 Canadian Flag US Flag
 Honda Acura
 ZIP  
Spied on the Street! 2018 Acura RDX(?) mule?
More.......................
All-New 2017 Honda Civic Hatchback Arrives This Fall in North America, 180hp "Sport" Trim on the way
More.......................
Honda Sets New Car and Truck Sales Records as American Honda Reports July Sales
More.......................
Civic 5-doors spotted in transport in England
More.......................
Acura NSX GT3 Program Progressing with Surprise Public Test Debut Slated for Mid-Ohio
More.......................
Acura Announces NSX GT3 updates via conference call today
More.......................
Just a bit of Civic 5-door trim info
More.......................
PRESS RELEASE: Motorcars Honda to host Solar Derby Event, Friday July 22
More.......................
General Talk --> Re: Toyota 86 = classic?
Join Discussion......
General Talk --> Re: 2018 Camry.
Join Discussion......
CR-V --> Re: 2015 CRV Vibration Recall TSB
Join Discussion......
RDX --> Re: Going for a 3rd in a row
Join Discussion......
General Talk --> Re: Right Hand Drive Markets/Australia
Join Discussion......
Civic --> Re: 2017 Hatchback - No more EX 6spd?
Join Discussion......
CR-V --> Re: 2017 CR-V RS
Join Discussion......
Professional Motorsports --> Re: F1 - 2016 Belgian Grand Prix
Join Discussion......
Professional Motorsports --> Re: F1 - 2016 Summer Break Discussion
Join Discussion......
General Talk --> Re: Precision Concept coming to Pebble Beach
Join Discussion......
Today's Reading Links --> Re: American Customer Satisfaction Index
Join Discussion......
Ridgeline - General Talk --> Pickuptrucks.com mid-size comparo
Join Discussion......
MDX --> Re: My 2017 Acura MDX Impressions
Join Discussion......
Accord --> Re: Did something change with the 9th gen Accord CVTs?
Join Discussion......
Today's Reading Links --> Re: EK9 Civic Type R river crossing - literally
Join Discussion......
2017 Honda Accord Hybrid Photo Gallery
Read Article....................
TOV Video: 2017 Honda Ridgeline ride along
Read Article....................
2017 Honda Ridgeline PR Photo Gallery
Read Article....................
First Drive: 2017 Acura NSX(!)
Read Article....................
2017 Acura NSX PR Photo Gallery
Read Article....................
TOV Video: Guy Melville-Brown talks about the 2016 Civic Coupe design
Read Article....................

[fancy] [flat] [simple]
  TOV Articles > TOV Dyno Test: 2013 Accord Sport CVT > > Re: Interesting

Viewing Threshold (What is this?)

Thread Page - [1]
Author
    
6SPDTL
Profile for 6SPDTL
Interesting [View Article]    (Score: 1, Normal) 11-08-2012 10:35
Reply to This Message Attach Quote to Reply
Its the first time I see CVT charts and it very enlightening. Personally I think it clearly demonstrates the advantages of the CVT in power delivery and efficiency. No ramp up to power, almost electrical in its power delivery. We old farts may miss the shift points, but there is no denying how well the system can match the engine's power to its power delivery. Finally the theoretical advantage of the CVT is being met by the hardware. Another advantage of the CVT is mechanical symplicity making repairs much simpler and much much cheaper. Good job Honda! It did take a long time but its seems they have delivered in spades.
Rental_beater
Profile for Rental_beater
Re: Interesting [View Article]    (Score: 1, Normal) 11-08-2012 11:59
Reply to This Message Attach Quote to Reply
6SPDTL wrote:
Its the first time I see CVT charts and it very enlightening. Personally I think it clearly demonstrates the advantages of the CVT in power delivery and efficiency. No ramp up to power, almost electrical in its power delivery. We old farts may miss the shift points, but there is no denying how well the system can match the engine's power to its power delivery. Finally the theoretical advantage of the CVT is being met by the hardware. Another advantage of the CVT is mechanical symplicity making repairs much simpler and much much cheaper. Good job Honda! It did take a long time but its seems they have delivered in spades.


Do a 35-75 mph run (conventional auto) vs CVT. Start the timer at throttle tip-in and NOT the first delta of 35mph....this is the fallacy of rookie automotive testing.
JDMImport
Profile for JDMImport
Re: Interesting [View Article]    (Score: 1, Normal) 11-08-2012 12:50
Reply to This Message Attach Quote to Reply
Are you saying you think a conventional auto would be quicker 35-75 or CVT? I didn't understand your wording.
JDMImport
Profile for JDMImport
Re: Interesting [View Article]    (Score: 1, Normal) 11-08-2012 12:53
Reply to This Message Attach Quote to Reply
All the Dyno shows is peak power being maintained. Nothing about speed because the ratio of the CVT transmission is unknown. One would think a cog transmission would be quicker do to constant gear ratio's.
JeffX
Profile for JeffX
Re: Interesting [View Article]    (Score: 1, Normal) 11-08-2012 13:06
Reply to This Message Attach Quote to Reply
JDMImport wrote:
All the Dyno shows is peak power being maintained. Nothing about speed because the ratio of the CVT transmission is unknown. One would think a cog transmission would be quicker do to constant gear ratio's.


speed is on the x axis of all the CVT plots. One of the plots shows the calculated gear ratio on the Y-axis as well (rpms/mph), so I don't know what you're trying to get at.
JeffX
Profile for JeffX
Re: Interesting [View Article]    (Score: 1, Normal) 11-08-2012 13:09
Reply to This Message Attach Quote to Reply
Rental_beater wrote:
6SPDTL wrote:
Its the first time I see CVT charts and it very enlightening. Personally I think it clearly demonstrates the advantages of the CVT in power delivery and efficiency. No ramp up to power, almost electrical in its power delivery. We old farts may miss the shift points, but there is no denying how well the system can match the engine's power to its power delivery. Finally the theoretical advantage of the CVT is being met by the hardware. Another advantage of the CVT is mechanical symplicity making repairs much simpler and much much cheaper. Good job Honda! It did take a long time but its seems they have delivered in spades.


Do a 35-75 mph run (conventional auto) vs CVT. Start the timer at throttle tip-in and NOT the first delta of 35mph....this is the fallacy of rookie automotive testing.




Have you driven one of Honda's new CVTs? this is what sets it apart from the lazy crappy ones found in cars like Nissan Altimas (and actually, every Nissan CVT I've ever tried). Honda's response to tip in is significantly faster. It even has a one-time step function where the gear ratio jumps very quickly, which makes it feel like an automatic transmission kicking down. I don't think the Honda CVT would lose anything to a comparable car with an AT trans in a 35-75 run.
JDMImport
Profile for JDMImport
Re: Interesting [View Article]    (Score: 1, Normal) 11-08-2012 13:16
Reply to This Message Attach Quote to Reply
Jeff wrote:
JDMImport wrote:
All the Dyno shows is peak power being maintained. Nothing about speed because the ratio of the CVT transmission is unknown. One would think a cog transmission would be quicker do to constant gear ratio's.


speed is on the x axis of all the CVT plots. One of the plots shows the calculated gear ratio on the Y-axis as well (rpms/mph), so I don't know what you're trying to get at.



I must have missed that graph. I will go look at it again. No need to get upset.
JDMImport
Profile for JDMImport
Re: Interesting [View Article]    (Score: 1, Normal) 11-08-2012 17:57
Reply to This Message Attach Quote to Reply
Looking at the dyno, I notice that the Sport suffers from 15% drive train loss. I thought Earth Dreams was supposed to drastically reduce internal friction, which would equate to less power loss and higher fuel mileage? We see the higher fuel milage, but no savings on power loss. Interesting...
Mechanic
Profile for Mechanic
Re: Interesting [View Article]    (Score: 1, Normal) 11-09-2012 04:45
Reply to This Message Attach Quote to Reply
p.2 Another takeaway: "One more quick note: we weighed the Accord Sport's handsome 18" wheels and they came in at a hefty 55lbs. That's something that will certainly dull acceleration a little bit and also show up on these dyno plots. Lighter weight wheels (such as the 17s found on the EX model) would likely reflect slightly better horsepower and torque numbers on the dyno charts as well as gain perhaps another tenth or two in the acceleration figures."

 
Thread Page - [1]
Contact TOV | Submit Your Article | Submit Your Link | Advertise | TOV Shop | Events | Our Sponsors | TOV Archives
Copyright © 2014 Velocitech Inc. All information contained herein remains the property of Velocitech Inc.
The Temple of VTEC is not affiliated with American Honda Motor Co., Inc. TOV Policies and Guidelines - Credits - Privacy Policy
mobile: 0