Microprocessor Based Ic Engines
MICROPROCESSOR BASED IC ENGINE CONTROL SYSTEM
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PRESENTED BY
O.Vamsi Krishna(10381A1430)
Btech-II Year,Mechatronics
Sri Kalahasteeswara Inst. of Technology.
Email:vk4151@gmail.com
ABSTRACT:
A method and apparatus for controlling the various functions of an internal combustion engine using a program-controlled microprocessor having a memory pre-programmed with various control laws and associated control schedules receives information concerning one or more engine-operating parameters such as manifold absolute pressure, throttle position, engine coolant temperature, air temperature, and engine speed or period or the like. These parameters are sensed and then supplied to input circuit for signal conditioning and conversion into digital words usable by the microprocessor. The micro processor system computers one or more digital command word indicative of a computer-commanded engine control operation and output circuitry responds to predetermined computer-generated commands and to corresponding pulse with control signals for controlling such engine operations as fuel injection, ignition timing, proportional and /or on-off EGR control and the like.
More particularly this disclosure relates to an improved microprocessor-based engine control system for controlling both fuel and ignition wherein an exhaust gas sensor is periodically sampled for the integrity of its output signals. In addition , an A/D converter having a novel window which is used in engine control system and the digital control of ignition signals is also described.
DIAGRAMS:
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Claims
1. A multiprocessing microprocessor based fuel injection system for an internal combustion engine comprising:
power supply receiving means adapted to receive power upon demand of the engine operator and to receive standby voltage during engine non-operating times;
a plurality of sensors adapted to be mounted on the engine, each of said sensors providing an output
[pic]
PRESENTED BY
O.Vamsi Krishna(10381A1430)
Btech-II Year,Mechatronics
Sri Kalahasteeswara Inst. of Technology.
Email:vk4151@gmail.com
ABSTRACT:
A method and apparatus for controlling the various functions of an internal combustion engine using a program-controlled microprocessor having a memory pre-programmed with various control laws and associated control schedules receives information concerning one or more engine-operating parameters such as manifold absolute pressure, throttle position, engine coolant temperature, air temperature, and engine speed or period or the like. These parameters are sensed and then supplied to input circuit for signal conditioning and conversion into digital words usable by the microprocessor. The micro processor system computers one or more digital command word indicative of a computer-commanded engine control operation and output circuitry responds to predetermined computer-generated commands and to corresponding pulse with control signals for controlling such engine operations as fuel injection, ignition timing, proportional and /or on-off EGR control and the like.
More particularly this disclosure relates to an improved microprocessor-based engine control system for controlling both fuel and ignition wherein an exhaust gas sensor is periodically sampled for the integrity of its output signals. In addition , an A/D converter having a novel window which is used in engine control system and the digital control of ignition signals is also described.
DIAGRAMS:
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Claims
1. A multiprocessing microprocessor based fuel injection system for an internal combustion engine comprising:
power supply receiving means adapted to receive power upon demand of the engine operator and to receive standby voltage during engine non-operating times;
a plurality of sensors adapted to be mounted on the engine, each of said sensors providing an output
References: www.patentstorm.us www.seminarprojects.com www.google.com/patents Dirac: Synchronous Multiprocessing Fail Detection, IBM Tech. Disclosure Bull., vol. 7, No. 3, Aug. 1964, pp. 218/219 Electronic Design: Watchdog Timer Lets Microcomputer Monitor Itself, Dec. 9, 1982, p. 22