Electronic Engine-Control System
The brain that coordinates and manages engine control and all of the electrical systems in a motor vehicle, including the spark plugs and the oxygen sensor, is the hybrid ceramic electronics system.
This system consists of half a dozen modules made up of complex silicon chip integrated circuits, plus other ceramic and semiconductor devices mounted on the surface of thin on the surface of sheets of aluminum oxide.
As shown in Figures 9-5 and 9-6, the alumina has a pattern of metal lines printed on the surface to interconnect the silicon chips and other electrical components.
Over 100 million modules are produced each year in the United States.
Central to the engine-control system is the master control module, which is essentially a computer only about 3 inches (7.6 centimeters) wide and 4 inches (10.2 centimeters) long.
This module is mounted between the fire wall (which isolates passengers from the engine heat and provides pro- tection in case of fire in the engine compartment) and the dashboard in cars, and right inside the engine compartment for marine engines, so it must be rugged and reliable.
Present master control modules are designed for operation between 104 +176°F (-40'and +80C).
Future automotive modules will be mounted in the engine compartment and are being designed to endure temperatures ranging from -122 to +302F (-50° to +150°C).
Electronic Engine-Control System
The brain that coordinates and manages engine control and all of the electrical systems in a motor vehicle, including the spark plugs and the oxygen sensor, is the hybrid ceramic electronics system.
This system consists of half a dozen modules made up of complex silicon chip integrated circuits, plus other ceramic and semiconductor devices mounted on the surface of thin on the surface of sheets of aluminum oxide.
As shown in Figures 9-5 and 9-6, the alumina has a pattern of metal lines printed on the surface to interconnect the silicon chips and other electrical components.
Over 100 million modules are produced each year in the United States.
Central to the engine-control system is the master control module, which is essentially a computer only about 3 inches (7.6 centimeters) wide and 4 inches (10.2 centimeters) long.
This module is mounted between the fire wall (which isolates passengers from the engine heat and provides pro- tection in case of fire in the engine compartment) and the dashboard in cars, and right inside the engine compartment for marine engines, so it must be rugged and reliable.
Present master control modules are designed for operation between 104 +176°F (-40'and +80C).
Future automotive modules will be mounted in the engine compartment and are being designed to endure temperatures ranging from -122 to +302F (-50° to +150°C).
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