-Industry Crossroads-

Transcription

1 -Industry Crossroads- Transition or Turmoil I S O / T S R E G I S T E R E D I S O R E G I S T E R E D w w w. l i t e n s. c o m

2 What is an OAD? Why is an OAD needed? OAD the 2 distinct features 4 OAD platforms Video of an OAD in transit application OAD = Overrunning Alternator Decoupler

3 FEAD Belt Tension Requirements Standard FEAD without vibration control Optimized FEAD with vibration control Belt Tension Influenced by system design: - vibration control; - system resonance; - tensioning type; - belt wrap; - belt type; - component inertia; - etc. Tension reduction Tension required by the accessories for their functions. Additional tension required to prevent slip caused by dynamic torque due to: - Engine accel/decel - System resonance - Wet weather Lower COF - Alternator changing electrical loads

4 Today s Vehicles clearly need more amperage

5 Busses are also in need more amperage Electric Fan option and/or 60 Articulated Bus X2 loads

6 Torsional Vibration Each time a cylinder fires, the crankshaft speeds up and slows down a little bit. These firing pulses are known as Torsional Vibration (TV). The lower the RPM, the higher the Torsional Vibration will be. It is these firing pulses that act on the alternator rotor, trying to speed it up and slow it down several times during every revolution of the engine. When the solid alternator pulley is used, these pulses create vibration and cause the belt tensioner to exhibit increased movement. Increased tensioner movement equals less durability for both the tensioner and belt, as well as all the other components within the belt drive system (including the alternator). The addition of Dual Mass Flywheels (DMF), Direct Injection, cylinder deactivation etc, can significantly increase the TV of an engine.

7 Larger alternators Industry Crossroads Clear industry trend is towards larger alternators with much more mass. This trend is causing early belt failure as well as nuiscance chirp/squawk noises during shifting and shutdown. Any belt noise = sliping and contributes to belt wear. The industry is also seeing premature alternator bearing failure. NEW Standard Up to 600 Amp! OLD Standard 235 Amp

8 Transit Bus and Coach issues Industry Crossroads The belt drive can not handle the large alternators. Evidence that the Transit industry needs an immediate solution.

9 Effects of Torsional Vibration

10 Not just noises Industry Crossroads The belt itself can not handle the large alternators. More evidence that the Transit industry needs an immediate solution. =

11 Solution = Monster OAD

12 Solution - OAD has both Overrun & Isolation

13 The solution is clear Transition to OAD

14 OAD Product Status LD OE at ADL, LD Production for more than 18 years, now over 34M per year 9k/hr MD OE at Scania with other bus OEMs steadily sourcing HD - Daimler Bus - OE since 2014 Monster OAD Currently Available and In Stock for the North American Transit/Coach

15 Monster OAD 2 part numbers Splined Shaft OAD EMP/Remy/ Dixie/Almott Alts (8 rib) Keyed Shaft OAD CEN Alts (8 rib). Romaine # New Flyer# N Romaine # New Flyer# N

16 For more information please visit Romaine Electric : Booth #9 5 mins install time will absolutely 1) Save on maintenance costs 2) Unlock your fleet s hidden Fuel $avings Monster OAD Insist on the Monster OAD on all new bus orders!