Governor stabilizer
AssigneeBriggs & Stratton Corporation
InventorsRobert Mitchell, Richard A. Dykstra
Life of this patent
Estimating the term…
Abstract
A stabilizer system creates a temporary droop to stabilize a governor for an internal combustion engine and reduce permanent droop and hunting of the engine. The governor adjusts the position of a throttle in response to engine speed to achieve a desired engine speed. The stabilizer system temporarily applies a force on the governor that initially resists sudden movement of the governor arm, and causes a temporary speed droop. The initial resistance of the stabilizer system helps prevent the governor from overshooting the desired speed and hunting. The temporary droop is then removed to permit the governor to achieve the desired speed to help prevent permanent droop.
Claims41
An apparatus that controls the speed of an internal combustion engine having an engine throttle, comprising:
- a governor that adjusts the position of the throttle to set the engine speed to a governed speed, including:
- a governor arm assembly that moves in response to engine speed;
- a throttle link interconnected to the governor arm assembly and to the throttle;
- a stabilizer system, interconnected to the governor and operable during normal operating speeds, that provides a speed change in the engine speed for a period of time after the application of a load, the engine speed thereafter increasing to be at least substantially equal to the governed speed while the load is still applied.
A governor assist device for an internal combustion engine having an engine housing, and having a governor arm assembly with a governor arm, and a throttle link interconnected to the governor arm assembly, the governor assist device being engageable with the governor arm assembly during normal operating speeds and comprising:
- a damper and a stabilizer spring interconnected in series between the engine housing and the governor arm.
A governor that adjusts a throttle for an internal combustion engine, the governor comprising:
- a governor arm assembly including a governor arm that moves in response to engine speed;
- a throttle link interconnected to the governor arm assembly and to the throttle;
- and
- a stabilizer spring and a damper interconnected in series between a fixed portion of the engine and the governor arm.
A governor assist device for an internal combustion engine having an engine housing, and having a governor including a governor arm assembly, and a throttle link interconnected to the governor arm assembly, the governor assist device being engageable with the governor during normal operating speeds and comprising:
- a damper and a stabilizer spring interconnected in series between the engine housing and the governor, wherein the damper includes a cylinder, and a rod at least partially disposed within the cylinder and movable with respect to the cylinder.
A governor that adjusts a throttle for an internal combustion engine, the governor comprising:
- a governor arm assembly that moves in response to engine speed;
- a throttle link interconnected to the governor arm assembly and to the throttle;
- and
- a stabilizer spring and a damper interconnected in series to a fixed portion of the engine, wherein the damper includes a cylinder, and a rod at least partially disposed within the cylinder and movable with respect to the cylinder.
Dependencies are inferred from the claim text.