Air vane governor with improved droop characteristics
AssigneeBriggs & Stratton Corporation
InventorHeinz K. Gund
Life of this patent
Estimating the term…
Abstract
The air vane governor has improved speed droop characteristics under no load and light load conditions to prevent engine stumbling. The air vane governor includes a primary spring and a secondary spring; both springs oppose the movement of the air vane at no load and light load conditions. At increased load, the secondary spring drops out. The tension on both springs is adjustable. The added spring force of the secondary spring makes the governor less sensitive at no load and light load, resulting in more even operation, particularly during engine warmup.
Claims22
An improved air vane governor for an internal combustion engine, said engine having a housing, said governor comprising:
- a plurality of fins affixed to and movable with a support member;
- a movable air vane having a surface that deflects air from said fins as said fins move with said support member;
- a primary resilient member, interconnected between said engine housing and said air vane, that applies a primary force in opposition to the movement of said air vane when a load is applied to said engine;
- and
- a secondary resilient member, interconnected between said engine housing and said air vane, that applies a secondary force in opposition to the movement of said air vane when the load applied to said engine is below a low load value.
Apparatus that changes the droop characteristics of an air vane governor of an engine, said engine having a housing, said governor having an air vane that is movable in response to the movement of a plurality of fins, comprising:
- a primary resilient member, interconnected between said engine housing and said air vane, that applies a primary force in opposition to the movement of said air vane when a load is applied to said engine;
- and
- a secondary resilient member, interconnected between said engine housing and said air vane, that applies a secondary force in opposition to the movement of said air vane when the load applied to said engine is below a low load value.
Dependencies are inferred from the claim text.