Buses used in inter- and intra-city applications are characterized by large windshields. These are usually higher than their width and, in most instances, are divided with a center molding. The configuration lends itself to a pantograph wipe pattern to allow cleaning of the largest area possible.
Wiper operation is demanding due to real estate constraints, that is, limited area for the motor and its linkage. FEATURES OF OPERATION have been lacking due to complication of the pneumatic system, confusion due to multiple controls, and the ever-present need to contain price.
ECAM (Electronically Controlled Air Motor) has introduced the electronic control of the windshield wipers while combining, for operator safety and convenience, operation in alternative modes, smooth stroke, added features, and greater available power.
Improvements in operational features such as INTERMITTENT or interval wiping, PROGRAMMED WASH, and headlight activation are featured with ECAM.