Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Powertrain Management: Description and Operation

Fig. 1a Component Operation:




Fig. 1b Component Operation:






The Electronic Gas Injection (EGI) system consists of the fuel pump, pressure regulator, injectors, fuel lines and hoses, various engine sensors, and an Electronic Control Unit (ECU).

The ECU monitors the various sensors and then determines the amount of time the injectors are opened.