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4-Stroke Diesel Engine Cut Sectional Model — Water-Cooled, Fuel Injection + Hot-Coil Start Visible
4-Stroke Diesel Engine Cut Sectional Model — Water-Cooled, Fuel Injection + Hot-Coil Start Visible
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Cut sectional teaching model of a single-cylinder 4-stroke water-cooled diesel engine — demonstrates the diesel cycle mechanics + fuel injection system + hot-coil starting device visible in metal + plastic construction. Shows all 4 strokes of diesel operation: intake (air only, no fuel), compression (high compression ratio for auto-ignition), power (fuel injected at TDC, ignites from heat of compression), exhaust. Water-cooling jacket visible. Fuel injector + hot-coil pre-heat start visible. Mounted for tabletop demonstration. $349.99 direct.
What students see in the cutaway
- Cylinder + piston — high-compression-ratio design (16-22:1 typical vs 8-12:1 for petrol)
- Fuel injector — high-pressure nozzle at cylinder head
- Injection pump — precision fuel metering + timing
- Hot-coil starting device (glow plug) — pre-heats combustion chamber for cold start
- Water cooling jacket — surrounds cylinder, connects to radiator (indicated)
- Crankshaft + connecting rod — power transmission
- Camshaft + valves — timing coordination
- Compression volume — small combustion chamber at TDC
Diesel cycle explanation
| Stroke | Diesel process | vs Petrol (Otto) |
|---|---|---|
| 1. Intake | Air only pulled in (no fuel yet) | Air + fuel mixture pulled in |
| 2. Compression | Air compressed 16-22× (temperature rises to 500°C+) | Mixture compressed 8-12× |
| 3. Power | Fuel injected at TDC → auto-ignites from heat | Spark plug ignites mixture |
| 4. Exhaust | Burnt gases expelled | Burnt gases expelled |
Teaching applications
- Mechanical engineering — Thermodynamics I/II, Engines + Combustion, IC engine design
- Automotive technology — ITI + polytechnic + automotive vocational training
- Physics + thermodynamics — Diesel cycle vs Otto cycle, adiabatic compression heating
- Marine engineering — large marine diesel engine principles
- Agricultural + heavy equipment training — tractor + agricultural machinery diesel
- Truck / commercial vehicle training — CDL + heavy vehicle mechanic programs
- Generator + power plant training — small diesel genset operation
Best for
- Mechanical + automotive engineering university departments
- ITI + polytechnic + trade school automotive programs
- Marine engineering academies
- Truck driver + heavy vehicle mechanic training schools
- Agricultural + heavy equipment training programs
- International engineering education (India, LATAM, Africa, SE Asia)
- Secondary school physics + auto shop programs
Buying for an engineering school or automotive program?
- Volume pricing on 5+ orders — university + ITI + polytechnic multi-lab builds
- Net-30 invoicing for verified educational accounts
- Bundle with 4-Stroke Petrol Engine + 2-Stroke Petrol + Steam + Gas Turbine models for complete engine teaching set
- Instructor's guide with Otto vs Diesel cycle comparison + P-V diagrams included on request
- SAM.gov compliant for federal + military automotive training
- International DDP — huge automotive + heavy equipment training markets globally
FAQ
What's the difference between 4-Stroke Diesel + 4-Stroke Petrol models?
Diesel: high compression ratio (16-22:1), fuel injected at TDC, auto-ignites from compression heat, glow plug for cold start, more efficient (30-45% thermal efficiency), higher torque at low RPM. Petrol: lower compression (8-12:1), fuel mixed with air before intake, spark plug ignition, no glow plug needed, less efficient (25-30%), higher power at high RPM. Both models teach 4-stroke cycle but different combustion physics.
Does this actually run?
No — cut sectional teaching model, not a functional engine. Students see internal components + fuel injection + glow plug clearly. For running diesel demos, look at running diesel trainer engines ($3K-$8K).
Is a schematic included?
Instructor's guide + P-V diagram card available on request. Component labels present on the model.
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