What does the computer in a car do

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What does the computer in a car do?
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(No Transcript)
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Keyless Car
Braking System
Electronic Stability Programme (EPS)
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• There is probably a computer controlling the
  automatic transmission
• If the car has anti-lock brakes, there is a
  computer reading the wheel speed and controlling
  the brakes
• Many air bag systems have their own computers
• A car with keyless entry or a security system has
  a computer for these systems
• Advanced climate control systems often have
  computers
• Some cars now have motorized seats and mirrors
  that can remember the settings for multiple
  drivers, and these contain computers
• Any radio or CD player with a digital display
  contains a computer of its own
• Cruise control systems use computers
• In other words, a modern luxury car is a rolling
  computer network. It is amazing how many embedded
  controllers a car can have.

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Keyless Car
Braking System

• The vehicle is fitted with an active safety
  system that incorporates
• dynamic driving control with traction control,
• emergency brake assist
• tyre pressure-monitoring system.
• The vehicle also incorporates passive safety
  (with the new Renault System for Restraint and
  Protection incorporated into the front and rear
  seats).

• A "smart" card locks and unlocks the doors and
  engine immobilizer, as well as
• memorizing the car's comfort settings.
• This allows the driver to set seat positioning,
  mirror settings etc. to his or her preferences.
  These settings will be set up automatically when
  the key card is used.

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Keyless Car
Braking System
Electronic Stability Programme (EPS)

• A sensor measures the speed at which the brake
  pedal is depressed a clear indication of when a
  driver is facing an emergency-braking situation.
  At that point, extra pressure is generated in the
  brake circuit, which allows the full application
  of all the braking effort (in conjunction with
  ABS) to be introduced as quickly as possible

• The Electronic Stability Programme (EPS) has also
  been incorporated, regulating engine power and
  brake pressure on one or more wheels to put the
  driver in maximum command when an incident forces
  evasive action.
• This allows the driver to set seat positioning,
  mirror settings etc. to his or her preferences.
  These settings will be set up automatically when
  the key card is used.

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Keyless Car
Braking System
All cars manufactured today contain at least one
computer. It is in charge of monitoring engine
emissions and adjusting the engine to keep
emissions as low as possible. The computer
receives information from a many different
sensors. The oxygen sensor The air pressure
sensor The air temperature sensor The engine
temperature sensor The throttle position sensor
The knock sensor The oxygen sensor

• Tyre Pressure monitor
• Inside the inflation valve on each wheel there is
  a sensor that acts as an early warning system
  against problems associated with a loss of tyre
  pressure.
• Information is transmitted by coded radio signal
  so as to identify the problem wheel to an
  on-board computer, which checks against the speed
  of the vehicle and informs the driver as
  necessary.

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Keyless Car
Braking System

• Using the information from these sensors
• The computer can control things like
• the fuel injectors,
• spark plugs and the idle speed to get the best
  performance possible from the engine while
  keeping emissions low.
• Diagnostics
• The computer can also sense when something has
  gone wrong and can inform the driver with the
  "Check Engine" light. A mechanic can read a
  diagnostic code from the computer and fix the
  problem.