How Early Timer-Control Systems Operate (Ward 79)

Previous diesel particulate filters systems have been governed by some sort of engine event, such as ignition start, exhaust temperature, or lapsed time. Such designs provide only limited protection to workers and their environments:

  • Filtration occurs when ignition is switched on, triggering 100 second max. countdown timer
  • Filtration occurs every time backup light comes on, needed or not.
  • Single-setting pre-set timer cannot be adjusted by the driver inside the cab
  • System does not automatically filter exhaust approaching the station driving into a bay
  • Two limit time limit is inadequate protection
  • When the timer runs down, trapped compressed exhaust and soot is back flushed to atmosphere

Engine events have only accidental relationship in detecting nearby humans and still leave them vulnerable to emission exposure. Unfortunately, diesel exhaust is at its most toxic state when vehicles depart and arrive, leaving the worst smoke for people to breathe in.

Smoke Blotter®, Inc. recognized that Timer-Controlled emission control systems could not adequately provide the "smart" coverage to protect humans from emissions. With its new proximity design, the Phantom Switch™ can address all the short-comings of timer-control systems with high-output efficiency.

Next: Evolution of DPF Systems