Search Results

The design, assembly and operation of a vehicle-based, real-time data acquisition system for the engine and cooling system are discussed. Evaluations of 50% antifreeze in water were performed on level road and 5% grade courses at speeds ranging from 30 mph to 60 mph. These runs were repeated in a chassis dynamometer cell and were followed by similar tests employing 60 and 70% antifreeze in water under 90 F ambient air temperature conditions. More than 40 engine and cooling system parameters such as temperatures, pressures, flow rates, engine spark timing. etc. were recorded to assess the performance of the vehicle and cooling system at each concentration of antifreeze and water. Data are compared to those from laboratory tests of other modern day vehicles and with data from experiments performed in cars during the 1960's with various concentrations of antifreeze in water.