Posted inModelling and Simulation
How Crash Tests Work: Understanding Car Safety Ratings
Posted inBasics
Automatic system adjustment
Another important feature of microcomputer engine control systems is their ability to be programmed to…
Posted inBasics
Evaporative emissions canister purge
During engine-off conditions, the fuel stored in the fuel system tends to evaporate into the…
Posted inBasics
Closed-loop ignition timing
The ignition system described in the foregoing section is an open-loop system. The major disadvantage…
Posted inBasics
Electronic ignition control
An engine must be provided with fuel and air in correct proportions and the means…
Posted inBasics
EGR control
A second electronic engine control subsystem is the control of exhaust gas that is recirculated…
Posted inBasics
Idle air control
A block diagram of a simplified idle speed control system is shown in Fig. b.…
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Idle speed control
Idle speed control is used by some manufacturers to prevent engine stall during idle. The…
Posted inBasics
Deceleration leaning
During periods of light engine load and high RPM such as during coasting or hard…
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Closed-loop control
Perhaps the most important adjustment to the fuel injector pulse duration comes when the control…
Posted inBasics
Open-loop control
For a warmed-up engine, the controller will operate in an open loop if the closed-loop…