Fuel Injection - LUCAS-BOSCH AFC Fuel Injection System: Description

NOTE: The Lucas-Bosch AFC Fuel Injection system is used on all models. Variations may exist between model applications with the addition of auxiliary control systems. This article covers the Lucas-Bosch AFC system in general, with manufacturer's differences noted.

The Lucas-Bosch Air Flow Controlled (AFC) fuel injection system is an electronically controlled system operated by incoming air flow. The AFC fuel injection system also contains a feedback system which measures oxygen content of exhaust gases and maintains the air/fuel ratio at about 14.7:1. The system consists of an electric fuel pump, fuel pressure regulator, fuel injectors, Electronic Control Unit (ECU), air flow meter, air temperature sensor, throttle switch, coolant temperature sensor, oxygen sensor (2 on TR8), 3-way catalytic converter and electrical relays. In addition, all models are equipped with a cold start system to aid in cold engine starts. The cold start system consists of an auxiliary air valve, cold start injector and thermo time switch.

Fig 1: Jaguar AFC Fuel Injection System

Courtesy of NOT AVAILABLE