Abstract: This document provides integrated systems for controlling fluid flow in a fluidic device. Methods of using such systems are also described herein.

Abstract: An electronic ignition system is disclosed for controlling as a function of at least one selected engine parameter the ignition or spark instants of an internal combustion engine having at least one cylinder with a piston and a rotatable crankshaft coupled to the piston to be rotatably driven as combustions occur within the cylinder at spark instant. The crankshaft has at least one reference position defining a positional relationship of the crankshaft to the cylinder. The electronic ignition system comprises a rotor fixed to rotate with the crankshaft and having a plurality of reference indicia thereon positionally related with respect to the reference position. The reference indicia are disposed at points equally spaced from each other by a predetermined arc of crankshaft rotation about the rotor. At least one of the points has a missing indicium and is disposed in a predetermined relation to the reference position of the crankshaft.

Abstract: An electronic ignition system is disclosed for controlling as a function of a selected engine parameter the ignition instants of an internal combustion engine having at least one cylinder, a piston, a spark plug for effecting combustion in the cylinder and a rotatable crankshaft coupled to the piston to be rotatably driven as combustions within said cylinder occur at said ignition instants. The crankshaft has a reference position defining a positional relationship of the crankshaft to the cylinder. The ignition system includes an optical encoder directly coupled to the crankshaft for generating ignition signals upon the termination of a variable crankshaft arc beginning at a point fixed with respect to the reference position. The length of the crankshaft arc is set as a function of one or more selected engine parameters.

Abstract: An electronic ignition system is disclosed for controlling as a function of a selected engine parameter the ignition instant of an internal combustion engine having at least one cylinder and a piston disposed therein and coupled to a rotatable crankshaft of the engine to define a first reference position with respect to the crankshaft. The ignition instant occurs upon the termination of an arc of crankshaft rotation at a second variable position with respect to the first reference position. The arc of crankshaft rotation is initiated at a third reference position fixedly disposed before said first reference position considering the rotational direction of the crankshaft.