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4 stroke diesel engine work

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 ðŸ”„ **1. Intake Stroke** (Suction) * **Action**: The piston moves **downward** from the top dead center (TDC) to the bottom dead center (BDC). * **Valves**: The **intake valve opens**, exhaust valve stays closed. * **What Happens**: **Air only** (not fuel) is drawn into the cylinder due to the vacuum created by the downward-moving piston. --- ### 🔥 **2. Compression Stroke** * **Action**: The piston moves **upward** from BDC to TDC. * **Valves**: Both **intake and exhaust valves are closed**. * **What Happens**: The air inside the cylinder gets **compressed**, increasing its pressure and temperature significantly. --- ### 💥 **3. Power Stroke** (Combustion) * **Action**: The piston is at TDC. At the end of compression: * **Fuel Injection**: **Diesel fuel is injected directly** into the hot compressed air (using an injector). * **Ignition**: The **fuel ignites automatically** due to the high temperature of the compressed air (no spark plug). * **Result**: Rapid expansion of gases fo...
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Mechanic Motor Vehicle

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### ✅ What is a Motor Vehicle Mechanic? A **motor vehicle mechanic** is a skilled professional who repairs and maintains cars, bikes, trucks, and other vehicles. They work on engines, brakes, electrical systems, fuel systems, and more. --- ### 🛠️ Skills You Need: 1. Basic knowledge of vehicle parts. 2. Understanding of how engines work. 3. Ability to use tools and diagnostic machines. 4. Problem-solving and attention to detail. 5. Good communication with customers. --- ### 📚 Courses You Can Take After Class 10: 1. **ITI (Industrial Training Institute)** – Motor Mechanic or Diesel Mechanic 2. **Diploma in Automobile Engineering** 3. **Apprenticeship at a workshop or garage** 4. **Online courses** – basics of automobile repair and engine systems. --- ### 🎥 Want to Start a YouTube Channel? You can share your learning journey and attract others with similar interests! Here's a sample idea for your first video: --- ### 🎬 **YouTube Shorts Idea 1** **🎥 Title**: "What Does a Moto...
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