Ignition control system for internal combustion engines with simplified crankshaft sensing and improved coil charging
USRE34183E · kind E · reissue
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1990 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Nov 23, 2010 |
Classification
- Technology area (CPC —)General
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. A single sensor is disposed at a point fixed in relation to the rotation of the crankshaft for providing a train of sensor signals, each signal occurring in time when each of the plurality of reference indicia rotates past the fixed point. The missin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.