Turbine Engine Start Control with Fuel Regulation

$ --- USD
Select model box above to view price. Contact us for quantity pricing.

The TSLM is a turbine engine start controller for engines and installations that allow partial control via electrical means of fuel delivery during the start process. The TSLM thus regulates the internal turbine temperatures to follow an optimum curve versus time and engine speed. The result is less wear and tear, protection against hot starts, and more regular successful starts. The table below gives the functionality of our two current models:

Functionality TSLM-M601TSLM-TPE331

Walter M601 turboprop

  • EHT valve control
  • Start fuel valve control
  • Ignition control
  • Starter control
  • Beta propeller speed control

Garrett/Honeywell TPE331 turboprop

  • SPR valve control
  • Fuel shutoff valve control
  • Fuel heat lockout control
  • Oil vent control
  • Ignition control
  • Starter control

Start Control

Through two different momentary actions, either to 'start' or to 'motor', the pilot can initiate the desired sequence. Sequences then require no further manual action to succeed. Only if a start malfunction proves unavoidable, such as a hot start, hung start, or no light-off, will it be necessary to intervene. The TSLM will do fuel-derichment or fuel-enrichment depending on the model so as to control the internal turbine temperature versus time and engine speed until the start is complete.

Engine Monitoring

The TSLM senses most, if not all, engine operational parameters, some being required for control, while others are solely informational. A warning light will annunciate not only when the TSLM detects a problem during a start but afterward (during flight) when particular parameters exceed their set limits. The TSLM further shares all operational information with other devices, including our DX1. The latter thus effortlessly realize in-cockpit engine instruments. All parameters get logged not only during every start but when one or more exceed their set limits. These can be retrieved and analyzed later.