Min/Max speed governor for an internal combustion engine

An internal combustion engine speed governor comprising:

• a housing;
• a flyweight assembly rotatably mounted in said housing;
• a riser positioned in said housing and being operably connected to said flyweight assembly, and being movable between a retracted position and an advanced position, and said riser having an intermediate position between said retracted position and said advanced position;
• said retracted position corresponding to said flyweight assembly being in an inward configuration, and said advanced position corresponding to said flyweight assembly being in an outward configuration
• a first spring operably mounted in said housing to bias said riser toward said retracted position when said riser is located between said retracted position and said advanced position;
• a second spring operably mounted in said housing to bias said riser toward said retracted position when said riser is between said intermediate position and said advanced position, and said second spring having a preload but inoperable when said riser is between said retracted position and said intermediate position;
• and
• said first spring being concentric with, and at least partially surrounded by, said second spring.

An internal combustion engine speed governor comprising:

• a housing;
• a flyweight assembly rotatably mounted in said housing;
• a riser positioned in said housing and being operably connected to said flyweight assembly, and being movable between a retracted position and an advanced position, and said riser having an intermediate position between said retracted position and said advanced position;
• said retracted position corresponding to said flyweight assembly being in an inward configuration, and said advanced position corresponding to said flyweight assembly being in an outward configuration
• a first spring with a first spring rate operably mounted in said housing to bias said riser toward said retracted position when said riser is located between said retracted position and said advanced position;
• a second spring with a second spring rate operably mounted in said housing to bias said riser toward said retracted position when said riser is between said intermediate position and said advanced position, and said second spring having a preload but inoperable when said riser is between said retracted position and said intermediate position;
• and
• said second spring rate being larger than said first spring rate.