Forum: WHALER
  ContinuousWave
  Whaler
  Moderated Discussion Areas
  ContinuousWave: Small Boat Electrical
  Mercury Digital Throttle and Shift Production Changes

Post New Topic  Post Reply
search | FAQ | profile | register | author help

Author Topic:   Mercury Digital Throttle and Shift Production Changes
jimh posted 11-25-2007 10:42 AM ET (US)   Profile for jimh   Send Email to jimh  
Mercury Marine's Digital Throttle and Shift (DTS) has been standard on their Verado motors and optional on a few OptiMax motors since 2004. However, there have been several changes in the DTS rigging and software which limit the functionality of the units depending on the epoch. Some of the variations are as follows:

2004

DTS only supported single or dual engine installation. Only a single helm location was supported. No foot throttle option was supported

2005

Triple or quadruple engines added. Dual helm locations added. Foot throttle control added.

2006

The "shadow" control, where three engines can be operated and controlled by only two throttle and shift levers, added. Power trim control from throttle handles after engine shutdown added.

The newer features cannot be retrofit onto older models as hardware changes to the wiring harness and software changes to the PCM controller and Command Module are required.

Source: Mercury Service Bulletin 2005-07

jimh posted 11-26-2007 09:49 PM ET (US)     Profile for jimh  Send Email to jimh     
When Mercury Marine Digital Throttle and Shift (DTS) controls are operating three or four engines with only two shift and throttle control levers--quadruple or triple engines in "shadow" mode--there is a rather complex matrix of control actions which is governed mainly by the ignition key position of the three or four engines. This page explains in detail all of the various combinations and resultant control actions:

http://www.mercurymarine.com/otherproducts/smartcraft/ smartcraftinaction/shadowmode.php

As you can see, the logic circuitry involved in accomplishing these decisions is rather complex. This is a good indicator of the degree of sophistication and intelligence which can be built into the control system when it is implemented primarily in software.

Post New Topic  Post Reply
Hop to:


Contact Us | RETURN to ContinuousWave Top Page

Powered by: Ultimate Bulletin Board, Freeware Version 2000
Purchase our Licensed Version- which adds many more features!
© Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000.