Diesel Engine Model: 4 Stroke Engine Operation. This diesel engine model demonstrates air intake, compression, fuel injection/combustion and exhaust strokes.
Building a 4-Cylinder Diesel Engine Model Kit - Mini 4-Cylinder Engine Assembly - YouTube
Amazon.com: Teching 4 Cylinder Full Metal Model Engine Assembly Kit Kids Run Adults 350+Pcs Assembly time 4 Hours DIY Toy Gift (4 Cylinder Engine) : Toys & Games
Amazon.com: KKXX TECHING 1/10 Metal OHV L4 Diesel Engine Model Building Kits That Works, DIY Educational Science Mini Engine Generator Toy Gift Set for Kids and Adults (Upgraded Version/300 Pieces) : Toys
TECHING Workable Mini Diesel Engine Metal Model Kits DIY OHV 4-cylinder Engine - Stirlingkit
Teching Mini Inline Four Cylinder RC Car Engine | FuryRC