• 4-Stroke Petrol Engine Working Model, product photo on white background
  • 4 Stroke Petrol Engine Working Model With Diagram
  • 4 Stroke Petrol Engine Working Model With Diagram
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SciMed

4-Stroke Petrol Engine Working Model, Air-Cooled Cutaway, 450mm

4-Stroke Petrol Engine Working Model, Air-Cooled Cutaway, 450mm

$999.99 USD
$999.99 USD
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Working teaching model of an air-cooled 4-stroke petrol engine (Otto cycle), cutaway construction reveals piston, valves, crankshaft, connecting rod, and camshaft in motion. Demonstrates the four strokes of internal combustion: Intake → Compression → Power (Combustion) → Exhaust. Valve operation clearly visible during rotation via hand crank. Mounted on polished wooden base with printed schematic diagram (labels the components and shows the Otto cycle phases). 450mm overall height. For mechanical engineering, automotive technology and physics teaching in universities, technical colleges, ITIs, polytechnics, and secondary science schools. $999.99 direct.

✓ 4-Stroke Otto Cycle✓ Air-Cooled Cutaway✓ Working Model (Hand Crank)✓ Valves and Piston Visible✓ Polished Wood Base✓ Schematic Diagram Included✓ 450mm Height✓ Made in India
Why students need physical engine models: The Otto cycle is fundamental to mechanical engineering and thermodynamics education. Textbook diagrams show the piston, valves and crankshaft as static drawings, students memorize but don't intuitively grasp valve timing, phase coordination, or how camshaft rotation controls when intake vs exhaust valves open. A physical working cutaway model changes this: students hand-crank the crankshaft, watch the piston move up and down, see the intake valve open on downstroke, watch the spark event, and see exhaust valve open on the exhaust stroke. It's the difference between reading about the Otto cycle and understanding it. Recommended for every mechanical engineering and automotive technology curriculum globally.

Specifications

Type 4-stroke Otto cycle petrol engine, air-cooled, cutaway working model
Configuration Single cylinder, vertical piston, overhead valves
Cutaway View Piston, cylinder, connecting rod, crankshaft, camshaft, valves clearly visible
Operation Hand-crank rotation (student rotates crankshaft to demonstrate cycle)
4-stroke Phases Demonstrated 1. Intake · 2. Compression · 3. Power · 4. Exhaust
Base Polished wooden base with printed schematic diagram and component labels
Overall Height Approximately 450 mm (17.7")
Base Dimensions ~350 × 250 mm (14" × 10"), desktop demonstration size
Materials Metal engine components (steel and aluminum), wood base, painted labels
Weight ~5-8 kg (compact, portable between classrooms)
Power Manual (hand crank), no electricity required
Country of Origin Made in India
Warranty 1-year against manufacturing defects

Teaching Applications

  • Mechanical engineering curriculum: Thermodynamics I / II, Engines and Combustion, Automotive Engineering
  • Automotive technology programs: ITI, polytechnic and technical college
  • University physics and thermodynamics: heat engines, Carnot cycle vs Otto cycle
  • Secondary school physics: introduction to internal combustion (upper secondary and A-level)
  • Automotive vocational training: mechanic training programs
  • Museum and science center displays: interactive physics and engineering exhibits
  • Corporate training: new-hire orientation at automotive manufacturers
  • NGO STEM outreach: engineering education in developing regions

Best For

  • Mechanical engineering departments (undergraduate labs)
  • Automotive engineering programs
  • ITI, polytechnic and technical college teaching labs
  • University physics and thermodynamics teaching
  • Automotive vocational and trade schools
  • Secondary schools and junior colleges (physics)
  • Science museums and educational displays
  • International engineering education (India, Africa, LATAM, SE Asia)
  • NGO STEM outreach programs

Buying for an Engineering School, ITI, or STEM Program?

  • Volume pricing on 5+ orders, university multi-lab builds, ITI network procurement
  • Net-30 invoicing for verified schools, universities, government training programs
  • SAM.gov / GSA compliant procurement for federal and state education
  • Bundle with 2-Stroke Engine Model, Diesel Engine Model and Steam Engine Model for complete IC engines teaching set
  • Instructor's guide and student worksheets included on request
  • International DDP shipping, huge STEM education growth in India, Africa, LATAM, SE Asia
  • NGO / global education pricing on 10+ unit orders
Email procurement →(669) 265-9353

FAQ

Does this actually run on petrol / fuel?

No, this is a CUTAWAY WORKING MODEL for teaching, not a functional engine. Students rotate a hand crank to demonstrate the 4-stroke Otto cycle mechanically. Valves open/close, piston moves up/down, camshaft rotates in synchronization, all mechanically driven by the crank. No fuel, no ignition, no combustion. Fully safe for classroom use.

What cycle phases can students see?

All 4 strokes of the Otto cycle: Intake (piston down, intake valve open), Compression (piston up, both valves closed), Power / Combustion (piston down, both valves closed, spark event indicated), Exhaust (piston up, exhaust valve open). Complete cycle = 2 crankshaft revolutions. Students see valve timing coordination via the camshaft.

Is a schematic / diagram included?

Yes, the polished wooden base includes a printed schematic diagram identifying each component (piston, cylinder, connecting rod, crankshaft, camshaft, intake valve, exhaust valve, spark plug location). Component labels included.

What other engine models do you have?

Complete IC engine teaching set: 4-stroke petrol (this), 2-stroke petrol, 4-stroke diesel, 2-stroke diesel, steam engine, Wankel rotary engine, Stirling engine. Bundle discount available on 3+ different types.

Is instructor training material included?

Instructor's guide covers: cycle explanation script, common student questions, suggested lab experiments (measure valve timing, calculate compression ratio, plot P-V diagram from cycle). Available on request.

User Manual (PDF)

Download the User Manual (PDF)

Browse all manuals by category at scimedstore.com/pages/user-manuals. Need a digital or printed copy, or have a question? Email sales@scimedstore.com.

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