The ignition system described in the foregoing section is an open-loop system. The major disadvantage…

An engine must be provided with fuel and air in correct proportions and the means…

A second electronic engine control subsystem is the control of exhaust gas that is recirculated…

A block diagram of a simplified idle speed control system is shown in Fig. b.…

Idle speed control is used by some manufacturers to prevent engine stall during idle. The…

During periods of light engine load and high RPM such as during coasting or hard…

Perhaps the most important adjustment to the fuel injector pulse duration comes when the control…

For a warmed-up engine, the controller will operate in an open loop if the closed-loop…

While the engine is warming up, an enriched air/fuel ratio is still needed to keep…

While the engine is being cranked, the fuel control system must provide an intake air/fuel…