F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
123/248
F02B 75/32 (2006.01)
Patent
CA 1275880
ABSTRACT The invention relates to an engine including a cylinder defining a combustion chamber which receives a combustible mixture for the combustion thereof, a piston slidably mounted therein for reciprocation between a first limit position whereat the chamber defines its minimum and maximum volume, a pair of rotatably mounted parallel crankshafts arranged equidistantly relative to the longitudinal axis of the cylinder, each having a crank-arm rotatable about its respective crankshaft axis, and means coupling the crankshafts together for synchronizing rotation thereof with the crank-arm of one crankshaft having an angular advance over the crank- arm of the other crankshaft. According to the inven- tion, a single-arm lever is pivotally connected at one end thereof to the piston for pivotal movement about a pivot axis extending normal to the cylinder longitudinal axis, and a pair of connecting rods interconnect the lever and respective crank-arms of the crankshafts with one connecting rod being pivotally connected to the lever at a free end thereof and the other connecting rod pivotally connected to the lever intermediate the ends thereof. The lever with the connecting rods define a position control means for enabling the lever to pivot and move past the longitudinal axis when the piston reaches the first limit position and to maintainn the piston substan- tially stationary at the first limit position for a time period sufficient to permit the crank-arm of the aforesaid one crankshaft to move past dead-center. Thus, substanti- ally maximum force is transmitted to the connecting rod connected to the crank-arm having the angular advance. reaches the first limit position and to thereby maintain the piston substantially stationary at the first limit position for a period of time sufficient to permit the crank-arm of the aforesaid one crankshaft to move past dead-center. Thus, substantially maximum compression can be achieved in the combustion chamber during a compression stroke of the piston when the piston is at the first limit position while the crank- arm of the aforesaid one crankshaft is positioned past dead-center and the pivotal connections of the connect- ing rods to the lever are positioned on a side of the longitudinal axis whereat the aforesaid one crankshaft is disposed such that upon combustion of the combustible mixture substantially maximum thrust can be imparted to the piston and substantially maximum force can be transmitted to the connecting rod connected to the crank-arm having the angular advance.
507257
Deland Olivier
Deland Technics Inc.
Swabey Ogilvy Renault
LandOfFree
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