TECUMSEH POWER COMPANY Patent applications |
Patent application number | Title | Published |
20090064957 | ENGINE STARTING SYSTEM - An internal combustion engine including an electrical starting system which integrates several components into a single assembly for easier manufacture and operation of the engine. For example, a safety switch and key are integrated with the electric motor starting system. The starting system includes a starter motor having a drive member in selective driving relationship with the engine crankshaft, and also includes a key and a switch assembled to the starter motor. The switch includes a power connector and a key interface, and the key and key interface are together moveable between a first or “insert/remove” position in which the key is selectively engageable and disengageable with the key interface, a second or “run” position in which the key is engaged with the key interface and the power connector is not in electrical communication with the starter motor, and a third or “start” position in which the key is engaged with the key interface and the power connector is in electrical communication with the starter motor. | 03-12-2009 |
20080245604 | PASSIVE SECONDARY AIR MUFFLER - A passive secondary air muffler for a small internal combustion engine. The secondary air muffler may include a venturi device and a catalytic converter. The venturi device may be in the form of a stamped sheet metal insert which, along with the outer muffler housing or shell, forms a secondary or auxiliary air intake device. The venturi device may also be formed from baffles separating an inlet chamber from an outlet chamber of the muffler. The secondary air intake device provides auxiliary or secondary air to the exhaust gas stream exiting the engine upstream of the catalytic converter to improve the efficiency of the catalytic converter. In an exemplary embodiment, the venturi device has a hemispherical cross-sectional shape or a circular cross-sectional shape taken along a plane substantially perpendicular to the direction of flow of the exhaust gas stream. | 10-09-2008 |