Drive for the ignition distributor of an internal combustion engine
AssigneeFord Motor Company
InventorHans-Ullrich Gondeck
Life of this patent
Estimating the term…
Abstract
An improved drive for the ignition distributor of an internal combustion engine of the type having a lubrication pump driven by its crankshaft. The pump has an internal gear driven by and coaxial with the crankshaft. An external gear has internal teeth and is driven, in planetary gear fashion, by the internal gear. A distributor shaft is rotatably mounted in the pump housing and has a helical tooth pinion gear that meshes with helical teeth on the external periphery of the external pump gear. Thus, the driven external gear drives the pinion gear and the distributor shaft. Preferably, the transmission ratio is 1 to 1.25 between the internal and external gears and 1 to 1.6 between the external and pinion gears, providing an overall ratio of 1 to 2 between crankshaft and distributor shaft.
Claims4
An improved drive for the ignition distributor of an internal combustion engine of the type having a crankshaft and a lubrication pump driven by said crankshaft, said lubrication pump including a housing, an external gear having internal teeth and an internal gear having external teeth meshing, in planetary gear fashion, with the internal teeth of said external gear, said internal and external gears being located in said housing, said internal gear driving said external gear and being coaxial with, and rotatably driven by, said crankshaft, wherein the improvement comprises:
- a distributor shaft rotatably journalled in said housing of said lubrication pump;
- and
- a pinion gear having helical teeth, said pinion gear being attached to said distributor shaft for causing rotation thereof, said external gear of said lubrication pump having external helical teeth meshing with said helical teeth of said pinion gear, said crankshaft when rotating driving said internal gear of said lubrication pump, said internal gear of said lubrication pump driving said external gear thereof, and said external gear driving said pinion gear and said distributor shaft.
Dependencies are inferred from the claim text.