🔍 Key Concepts

• Study how the camshaft and multiple cams are arranged to operate several outlets in sequence. • Notice the type of connections/ports on the housing: do they look like high‑pressure fuel lines, lube oil feeds, air lines, or mechanical valve gear? • Think about an engine system that must deliver something to each cylinder in a timed order during only one particular phase of operation.

💭 Think About

• What engine system needs a rotating cam device to distribute flow to each cylinder one after another, especially during engine starting? • If this were a fuel injection pump or lube oil system, what additional components (plungers, fuel racks, or distribution blocks to each cylinder) would you expect to see that are NOT present here? • Would a mechanism that actuates exhaust valves normally use a sealed box with ports and a rotor, or visible rocker arms/pushrods and valve gear instead?

✅ Before You Answer

• Identify whether the outlets on the device are arranged to go to each cylinder head for a specific temporary service (like starting) rather than continuous operation. • Check if the internal parts look like valves opened by cams to pass a gas, not plungers to pressurize liquid fuel or oil. • Ask yourself which option describes a system that must work only during engine start‑up and must be timed to cylinder firing order.