Engine-flywheel hybrid

Abstract

An engine-flywheel hybrid in which the engine power is varied mainly by the frequency of power cycles, not by the power per power cycle. The flywheel absorbs the energy from the power cycles and delivers energy. The rotary stop start mechanism stops and starts a crankshaft efficiently with minimal energy loss. This is accomplished by varying the offset of a double crank four bar linkage. The invention allows an engine's flywheel to be quickly be brought up to speed in about a half of a revolution, followed by combustion, expansion, and stopped one revolution after starting. Further, utilizing offset, the engine crankshaft will turn faster than the input shaft when the piston is at top dead center, shortening the time of highest heat transfer, making the engine more efficient. Also, that when used as an auto engine, the part load efficiency would be near the maximum efficiency of the engine, nearly doubling the miles per gallon of the auto.

1 - 6 . (canceled) 
   
   
       7 . a mechanism driven by an input shaft which stops the output shaft once per revolution comprising:
 a. a double crank four bar linkage, with similar crank radii and coupler length,   b. means to increase the offset of the shafts of said four bar linkage to where the output shaft crankpin is close to the input shaft axis, sufficient to substantially stop the output shaft,   c. means to decrease the offset of the shafts of said four bar linkage when the said output shaft crankpin is away from the input shaft axis,   whereby the output shaft can be stopped once per revolution,   
   
   
       8 . The mechanism of  claim 7  wherein the said means to increase the offset and said means to decrease the offset comprises:
 a. an input shaft support bracket mounted on a pivot   b. said input shaft support bracket having a first tooth for holding at the minimum offset and a second tooth for holding at the maximum offset,   c. an eccentric on said input shaft phased to have maximum offset when the said output shaft crankpin and the said input shaft are coincident,   d. a cyclic hold bracket mounted on a pivot,   e. said cyclic hold bracket having a third tooth for cyclic offset,   f. a link connected from said eccentric to said cyclic hold bracket,   g. a first jaw which may be engaged to said third tooth on said cyclic hold bracket to change the said input shaft offset cyclically,   h. a second jaw which may be engaged to the said second tooth to hold at the maximum offset,   i. said second jaw which may be engaged to the said first tooth to hold at the minimum offset,   
     whereby the input shaft offset can be changed efficiently between minimum and maximum offset or held at the maximum offset or the minimum offset and the changeover between a fixed offset and a cyclic offset may be accomplished when the offset is at an extreme. 
   
   
       9 . The mechanism of  claim 7  further including a mechanism to selectively start and stop an attached mechanism comprising the method of:
 a. engage the acceleration dog prior to the said output shaft stopping,   b. after the said output shaft starts, engage a deceleration dog,   c. to stop the said attached mechanism,   d. disengage the acceleration dog prior to the said output shaft stopping,   e. after the said output shaft stops, disengage said deceleration dog,