Closed system transient diesel fuel conditioning and measurement system

A method of measuring and conditioning fuel for an engine, comprising the steps of:

• communicating fuel to a mixing tank;
• measuring the flow of fuel flowing into the mixing tank;
• cycling fuel from the mixing tank to the engine and back to the engine;
• measuring the temperature of the fuel within the mixing tank;
• pumping fuel from the mixing tank through the first and second heat exchangers and back to the mixing tank;
• and
• controlling the flow of heating/cooling media to the first and second heat exchangers based on the temperature measuring step while maintaining a constant fuel circulation rate.

A closed loop transient fuel conditioning and measurement system, comprising:

• a mixing tank including first and second inlets and first and second outlets, the first inlet and first outlet being adapted to be connected to a diesel engine;
• a fuel conditioning loop connected to the mixing tank second inlet and second outlet;
• a first heat exchanger interposed in the fuel conditioning loop, the first heat exchanger having a heating medium;
• a second heat exchanger interposed in the fuel conditioning loop, the second heat exchanger having a cooling medium;
• a fuel inlet conduit having an inlet and an outlet, the outlet being connected to the fuel conditioning loop, the inlet being adapted to be connected to a source of fuel;
• a flow meter interposed in the fuel
• inlet conduit;
• and
• a density meter interposed in the fuel inlet conduit.