Benefits of trolley assist
The truck speed increases because the trolley line can supply more power than existing diesel engines (5,200HP vs. 2,700 HP, speed increases by 90%).
Higher speed on trolley means shorter cycle time and higher productivity — or fewer trucks for the same production.
Reduces fuel and engine maintenance costs:
Without trolley, 70% to 80% of fuel is consumed on grade.
Trolley assist dramatically reduces engine power demand on grade (engine idles on direct trolley).
Engine overhaul intervals are proportional to the amount of fuel burned (e.g., 1 overhaul for every 540,000 gallons of fuel).
As a result, the engine overhaul intervals can be doubled or tripled.
Economic analysis with trolley calculator:
Eliminates the myth of complexity providing an easy to understand, fundamental feasibility analysis.
Inputs are mine-specific system parameters like cycle length, grade, production requirements, prices of diesel fuel and electricity, etc.
Quickly provides first feasibility results analyzing benefits, costs, and payback.
Environmental impact:
Reduced noise with Trolley Assist because engine idles. Trolley lines can be installed on any grade, including level ground, because vehicle speed is independent of voltage line.
Reduced noise from quiet grid blower and silent retard resistors.
Trolley operation improves air quality by reducing diesel engine emissions.
More flexibility for maximum performance:
With AC trolley assist, vehicle speed is independent of the line voltage — the driver can run at any speed.
Connection with trolley line is possible at all speeds.
Transition occurs quickly and smoothly under full diesel power with no coasting, no jerk, and with automatic connection to any trolley line voltage.
08/15/2006 | Author: Caroll Ford