Fuel pressure regulator with fuel temperature responsive shape memory calibration

A fuel pressure regulator comprising:

• a housing;
• a movable diaphragm dividing the housing into a fuel chamber and a control chamber;
• said housing having a fuel inlet port for flowing pressurized fuel toward said fuel chamber and a fuel outlet port for flowing pressure regulated fuel from said housing;
• a valve between said fuel inlet port and said fuel outlet port and including a valve seat, a valve element movable toward and away from said valve seat and a spring for biasing said valve element toward said valve seat;
• said diaphragm including a member movable with and relative to said diaphragm toward and away from said valve element;
• and
• a device carried by said diaphragm engaging said member and formed of a temperature responsive shape memory material for displacing said valve element relative to said seat in response to a predetermined temperature of the fuel within the pressure regulator.