🔍 Key Concepts

• Valve bridge function in multi-valve diesel cylinder heads • Relationship between a single rocker arm and multiple exhaust valves • Difference between mechanical actuation, lubrication, and rotation of valves

💭 Think About

• Look at how the bridge sits between the rocker arm and the valve tips: what motion comes in, and what motion goes out? • Ask yourself which of the choices describes the primary mechanical purpose of this part, and which sound more like secondary features or separate components (like rotators or lubricators). • In the cross‑section, does the oil flow path or the spring arrangement change what is being operated, or only how it behaves?

✅ Before You Answer

• Identify where the rocker arm contact point is on the illustration and where the valve tips are. • Decide whether the part is mainly transmitting motion, supplying oil, or forcing rotation. • Eliminate any answer that describes a function usually performed by a valve spring or a separate valve rotator rather than the bridge itself.