[home][rumors and news][model release matrix][tov motorsports][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  
Acura
There are currently no active Acura promotions
Honda
There are currently no active Honda promotions
A little Prelude tidbit that came from last week's dealer meeting...
More.......................
Acura releases details on upcoming 2025 MDX refresh
More.......................
Acura confirms debut of long-rumored entry-premium CUV for early 2025
More.......................
American Honda reports March and 1st Quarter 2024 sales results
More.......................
Spied on the Street! 2025 Acura MDX Type S
More.......................
Honda releases details on upcoming 2025 Fuel-Cell Plug-in CR-V
More.......................
Honda enables Wireless CarPlay and Android Auto on 10th generation Accords via software upgrade
More.......................
American Honda reports January 2024 sales results
More.......................
General Talk --> Re: 2025 Honda Civic Hybrid revealed, plus Civic-wide design and tech updates
Join Discussion......
General Talk --> Re: The Old Man's thoughts about Honda's future
Join Discussion......
Professional Motorsports --> Re: F1 at Imola - Spoilers
Join Discussion......
Classifieds: Buy & Sell --> Re: 21 Civic Sport Manual......... I have one and it's for sale.
Join Discussion......
Pilot --> Re: Purchased a 2023 Pilot Elite
Join Discussion......
General Talk --> Re: Global Debut: Honda Class 8 Hydrogen Fuel Cell Truck Concept
Join Discussion......
Passport --> Re: 2025 Passport
Join Discussion......
Fuel Cell Technology --> Testing Toyota's Failing Hydrogen Car
Join Discussion......
General Talk --> Re: 2024 Acura ZDX Type S Named as Official 2024 Pikes Peak Pace Car
Join Discussion......
Clarity --> Re: Oh, we bought our PHEV
Join Discussion......
General Talk --> Re: Honda 'steadily and surely moving ahead' on EVs, announces large investment
Join Discussion......
General Talk --> Re: It's going to be biblical wet in the Western States!
Join Discussion......
Videos --> THIS Is Why The 90s Was the BEST DECADE For Cars
Join Discussion......
Professional Motorsports --> Re: Yuki wants to increase his value for future F1 seat
Join Discussion......
Civic --> Re: 2025 Civic Tidbits....RIP 1.5t
Join Discussion......
Jump to:
Transmission
5-SPEED AUTOMATIC WITH SEQUENTIAL SPORTSHIFT, PADDLE SHIFTERS AND GRADE LOGIC CONTROL

To maximize acceleration performance, fuel economy and driver control, the RL has a standard 5-speed automatic with Sequential SportShift, paddle shifters and Grade Logic Control. Mechanically related to the extremely compact transmission that made its debut in the 2003 MDX, the 2005 RL unit has upgrades and enhancements to suit the greater engine output and higher engine speeds of the RL.

Designed for low maintenance and a high level of durability, the RL transmission requires no scheduled service until 120,000 miles. To provide strong off-the-line acceleration coupled with a relaxed, fuel-efficient cruising rpm, the unit has the widest ratio spread of any 5-speed automatic transmission in the class.

Automatic Mode

The Sequential SportShift transmission can be operated in conventional fully automatic mode via a front center console-mounted gated shifter. When in automatic mode, the transmission incorporates an advanced Grade Logic Control System and Shift Hold Control, both of which work to reduce gear "hunting" and unnecessary shifting.

Shift Hold Control keeps the transmission in its current (lower) ratio when the throttle is quickly released and the brakes are applied (as might be the case when decelerating to enter a corner). Shift Hold Control leaves the chassis undisturbed by excess shifting, ensuring that abundant power is immediately available without a downshift.

Grade Logic Control alters the 5-speed automatic's shift schedule when traveling uphill or downhill, reducing shift frequency, and improving speed control. Throttle position, vehicle speed and acceleration/deceleration are continuously measured, then compared with a map stored in the transmission computer. The Grade Logic Control System then determines when the car is on a hill; if this is the case, the shift schedule is adjusted to automatically hold the transmission in a lower gear for better climbing power or increased downhill engine braking.

Manual Mode

The Sequential SportShift transmission can be shifted into manual mode by moving the front center console-mounted selector lever laterally to a special gate to the left of the "Drive" position. The RL offers two ways to change gears when in manual mode: either by a push or pull of the shift lever, or via F-1 style paddle shifters mounted on the steering wheel. A digital display in the tachometer face indicates which gear the transmission is in. To heighten control and driver involvement, special shift logic in manual mode delivers quicker, firmer shifts than in fully automatic mode.

To help protect the engine and drivetrain from damage, an array of preventative features are active when the transmission is in manual mode. In second, third and fourth, the logic changes, and the transmission ECU cuts off fuel flow to the engine if there is a possibility of over revving.

In the rare situation where the fuel cutoff alone is unable to prevent engine over revving (as could happen on a steep downhill) the transmission will upshift itself to prevent engine damage. And finally, when downshifting, the transmission won't execute a driver-commanded downshift that would send the engine beyond redline in the lower gear. The Sequential SportShift transmission will automatically downshift to first gear as the vehicle comes to a stop, to prevent lugging away from a stop in a high gear.

5-POSITION SHIFT GATE

The new RL benefits from a new 5-position shift gate that simplifies the operation of the transmission. It features a quiet linkage and a speed-controlled reverse lockout solenoid to prevent transmission damage. When operated in automatic mode, the transmission lets the driver choose D (1st through 5th gear) or D3 (1st through 3rd gear). Engine braking can be provided easily by moving from D to the D3 position, downshifting from 5th, 4th or 3rd gear, depending on the vehicle speed.

COOPERATION BETWEEN 5AT AND DRIVE-BY-WIRE

Both shift speed and smoothness have been improved by cooperation between the new Drive-by-Wire Throttle System and the electronically controlled automatic transmission. Now that the engine can be throttled by the engine management system during upshifts and downshifts, the function of the engine and transmission can be closely choreographed for faster, smoother shifting. As a result, the peak g's (or "shift shock") are reduced significantly during upshifts and downshifts.



[Previous Page] [Next Page]

reader's comments
Click Here to Submit Your Comments

Viewing Threshold (What is this?)

[fancy] [flat] [simple]
Date Thread Starter Thread
09-01-2004 02:55
Thanks TOV. Cannot wait for test-drive.   (Score: 1, Normal)
le
09-15-2004 22:53
Re: Thanks TOV. Cannot wait for test-drive.   (Score: 1, Normal)
BOOMER
09-04-2004 13:05
2005 RL   (Score: 1, Normal)
JJAcura1
Jump to:
First Drive: 2023 Acura Integra - Rebirth of an Icon?
Read Article....................
2023 Acura Integra PR Photo Gallery
Read Article....................
2022 Acura MDX Specs and Features
Read Article....................
2022 Honda Civic Design Story, a video by Honda
Read Article....................
Photo Gallery: 2021 Acura TLX Advance
Read Article....................
Photo Gallery: 2021 Acura TLX A-Spec
Read Article....................
Contact TOV | Submit Your Article | Submit Your Link | Advertise | TOV Shop | Events | Our Sponsors | TOV Archives
Copyright © 2023 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
30