Ignition brake for an internal combustion engine

Patent · Tue Jul 06 04:00:00 EDT 1993

OSTI ID:6356740

Kandler, W C

In an internal combustion engine powered implement having an engine with a piston disposed in a cylinder, a crankshaft, a flywheel secured to the crankshaft, and a sparking device for igniting fuel in the cylinder, a safety device is described comprising: an ignition circuit operable to produce a spark in the sparking device to combust the fuel, the ignition circuit having means for generating a normally timed sparking voltage to normally combust the fuel, and means for generating an advanced timed sparking voltage to prematurely combust the fuel; a switch device for decoupling one of the generating means from the ignition circuit and connecting the other of the generating means in the ignition circuit; and a dead man mechanism operable to actuate the switch device, the dead man mechanism being operator actuable into a first position wherein the switch device decouples the means for generating an advanced timed sparking voltage from the ignition circuit whereby the engine may normally run, the dead man mechanism normally biased into a second position when released by the operator wherein the switch device decouples the means for generating a normally timed sparking voltage from the ignition circuit and connects the means for generating an advanced sparking voltage to cause the engine to rapidly slow and stop under influence of the prematurely combusted fuel.

• Assignee: Tecumseh Products Co., MI (United States)
• Patent Number(s): US 5224448; A
• Application Number: PPN: US 7-956397
• OSTI ID: 6356740
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
BRAKES
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION CHAMBERS
ENGINES
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
OXIDATION
PISTONS
SPARK IGNITION ENGINES
THERMOCHEMICAL PROCESSES