Results Base Case CartHydraulic Hybrid Cart Stop and Go Fuel Economy13.9 mpg21.1 mpg 52.4% increase in average stop and go fuel economy
Improvements Different pump or hydraulic motor Variable displacement motor Check valves with lower cracking pressure Design to eliminate minor losses
Business Plan Target Market Package delivery, garbage trucks, city buses Introduction to the market O.E.M. Retrofit is to expensive Potential Savings Higher gas mileage, lower maintenance costs
Business Plan Feasibility High cost on prototype Pay back period is 19 years at current gas prices ($4.20) Longer than the life of the vehicle
Obstacles Budget Time Experience with Hydraulic Systems Component Failure
Conclusions Met our goal! Met efficiency expectations Proved our system works Very expensive system Learned a lot Had fun!
Acknowledgements Matt Mills & Kelly Dawley – Vermeer Corporation Vermeer Charitable Foundation – Financial Support Ned Nielsen – Team Advisor Ren Tubergen – Industrial Consultant Phil Jasperse – Calvin College Metal Shop Charlie Huizinga – Calvin College Physical Plant Bond Fluidaire, Inc – Hydraulic hose and fittings Great Lakes Fluid Power – Accumulator Charging Rex Sheler – Decals Mike Harris – Donor Acquisition Jim Kuipers – Cart Donation Family and Friends