F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
F02M 1/08 (2006.01) F02M 23/04 (2006.01)
Patent
CA 2536744
An automatic priming system for internal combustion engines, which is operable to prime the carburetor of the engine at engine cranking speeds, and is automatically disabled after the engine starts. The automatic priming system is driven by pressure fluctuations within the engine crankcase which are caused by reciprocation of the piston. At engine cranking speeds, fluid communication of positive and negative pressure pulses between the engine crankcase and an accumulator is allowed via a restrictor. The positive and negative pressure pulses are used to drive an air pump, such as a diaphragm air pump, to pump atmospheric air to the carburetor to pressurize the fuel bowl of the carburetor for priming. After the engine starts and the piston reciprocates more rapidly, the restrictor prevents communication of positive and negative pressure pulses between the crankcase and the accumulator, and the pressure within the accumulator is relatively constant and below atmospheric pressure. In this manner, the air pump is no longer driven by the positive and negative pressure pulses and the priming operation is terminated.
Ridout & Maybee Llp
Tecumseh Products Company
LandOfFree
Automatic priming system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic priming system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic priming system will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1470509