Patent ID: 6374817
Filing Date: 2002-04-23
Classification: F02D,G01N

Abstract:
A control system for regulating the fuel and air mixture used in an engine, the system comprising:an engine producing drive power through combustion of fuel and air; an analog sensor operably connected to the engine, the analog sensor monitoring a concentration of gases produced through the combustion of fuel and air in the engine, the analog sensor generating an analog signal that varies in accordance with the concentration, the analog signal being within a first predetermined voltage range; an amplifier, the amplifier receiving the analog signal and amplifying the analog signal to generate an amplified signal, the amplified signal being within a second predetermined voltage range, wherein the second voltage range is greater than the-first voltage range; and a mixture control module including an analog-to-digital (AID) converter and a microprocessor, the A/D converter receiving the amplified signal and generating a digital signal that varies in accordance with the amplified signal, the A/D converter being adapted to convert input voltages varying within the second voltage range, the microprocessor receiving the digital signal from the A/D converter and producing a mixture signal that varies in accordance with a desired fuel and air mixture, wherein the output of the microprocessor alters the fuel and air mixture provided by the mixture control module to the engine.