Competition Cams, Inc.

Paul Brothers

Matthew R Patrick

William Godbold

A valve lifter apparatus is provided including a valve lifter body with predetermined oil paths for increase lubrication to a rolling member for engaging a lobe of a camshaft. An anti-rotation member for prevent rotation of the valve lifter in the lifter bore of the engine block as the valve lifter reciprocates is also provided. The valve lifter apparatus may be employed in high revolutions per minute engines to decrease valve lifter wear and increase performance.

Anti-rotation valve lifter guide apparatus

Valve lifter apparatus

A low power or current draw adjustable trigger switch and method and system for using the adjustable trigger switch in conjunction with a triggered accessory for an internal combustion engine, such as a feed from a source of compressed oxygen enhancer, such as nitrous oxide. The adjustable trigger switch, in operation in conjunction with the triggered accessory, allows selective activation of the accessory to, for example, improve engine performance. In one application, the triggering occurs via an engine electrical output, such as a throttle position sensor (TPS) voltage. The trigger, which includes, for example, an operational amplifier circuit, logic gates, or a series of transistors (e.g., a Schmitt trigger), operated in conjunction with a user variable setting, such as a potentiometer, and an indicator for proper setting, such as a light emitting diode (LED), allows variable tailoring of the trigger to the sensed output at a selected output setting without incurring significant power or current draw from the sensed output. Another aspect of the invention is use of a low power or current draw switch, such as a metal-oxide-semiconductor field-effect transistor (MOSFET) that further allows triggered accessory operation at high power or current draw without producing high power or current through the sensing circuit itself.

Adjustable trigger switch for nitrous oxide injection application

A valve lifter of the present invention includes a tappet body having a forked housing for receiving a cylindrical roller. The cylindrical roller is provided with a bearing assembly and a shaft extending therethrough to operatively couple the roller to the forked housing. To provide lubrication to the cylindrical roller and bearing assembly, the tappet body includes an oil pressure feed groove, oil feed slots, and an oiling channel located on the external surface of the tappet body.

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Memphis, TN, United States of America

Paul Brothers