Which fuel injection system has a separate fuel injector for each combustion chamber?

• A. Single-Point Injection
• B. Direct Injection
• C. Multipoint Injection or Port Fuel Injection
• D. Electronic Fuel Injection

Answer: (C)

Having a separate fuel injector for each combustion chamber is the defining feature of multipoint (port) fuel injection. In this setup, each cylinder has its own injector located in the intake manifold, spraying fuel into the corresponding intake port just before the air enters the cylinder. This per-cylinder delivery allows precise fuel metering tailored to each cylinder’s needs and helps create a consistent air-fuel mixture for every cycle.

Single-point injection uses a single injector for all cylinders, so there isn’t a dedicated injector per combustion chamber. Direct injection also provides one injector per cylinder, but it sprays fuel directly into the combustion chamber rather than into the intake port; in many test contexts, the term multipoint/port injection is the specific configuration described as having a separate injector per cylinder in the intake path. Electronic fuel injection is a broad category that includes these various layouts rather than naming a specific arrangement.