SKU: 833113237

4 Stroke Gasoline Engine Model Metal Internal Combustion Engine Physics Experiment Teaching Instrument

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Description

4 Stroke Gasoline Engine Model Metal Internal Combustion Engine Physics Experiment Teaching Instrument4 Stroke Gasoline Engine Model Metal Internal Combustion Engine Physics Experiment Teaching Instrument Features: . 100% brand new with high quality . The design is novel and the shape is unique . The model is made with fine quality and reliable quality, which can visually observe the operation process of the gasoline engine . Usage: Turn on the power and slowly turn the handle in the direction indicated by the arrow . Suction stroke: The intake valve

4 Stroke Gasoline Engine Model Metal Internal Combustion Engine Physics Experiment Teaching Instrument

Features:


.100% brand new with high quality
.The design is novel and the shape is unique

.The model is made with fine quality and reliable quality, which can visually observe the operation process of the gasoline engine

.Usage: Turn on the power and slowly turn the handle in the direction indicated by the arrow


.Suction stroke: The intake valve is opened, the exhaust valve is closed, and the piston moves downward from the top dead center to the bottom dead center.A mixture of fuel and air enters the cylinder from the intake manifold


.Compression stroke: The intake valve and the exhaust valve are closed, the piston moves from bottom to top,and the fuel mixture is compressed in the cylinder, and the temperature rises rapidly


.Power stroke: When the piston reaches the top dead center, the spark plug is ignited (represented by the bulb at the spark plug)


.The fuel mixture is spotted (the bulb is extinguished to indicate that the ignition is complete). The gas in the cylinder expands rapidly due to being ignited, pushing the piston to start moving downward to the bottom dead center. At this time, the crankshaft outputs power

.Exhaust stroke: Due to the inertia of the rotating mechanism, the crankshaft passes the bottom dead center and the piston moves upward


.At the same time, the exhaust valve is opened and the exhaust gas is discharged from the exhaust pipe.After the exhaust stroke is completed, the exhaust valve is closed, the intake valve is opened, the piston moves downward, a new suction stroke is started, and the next cycle is entered

Specifications:

.Color: As Shown
.Material: Metal
.Product Weight: 1300g
.Package Dimensions: 16*13*29cm    
.Package Weight: 1400g
.Packing: Box 

Package Content:

.1 x Gasoline Engine Model

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SKU: 833113237

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4.5 ★★★★★
Based on 19 reviews
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Mike c
Los Angeles, US
★★★★★ 5
My 2 German shepherds love these good quality last a good bit
Size: Large (Pack of 1)
I buy these for my 2 German shepherds. My male is a heavy chewer and he will spend time with this everyday until he starts to wear it down or makes it into a makeshift shank and I replace it Last about 3-4 months for aggressive chewers. Highly recommend (keeps them from chewing my stuff)
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Reviewed in the United States on May 1, 2026
R
Verified Purchase
Reviewer 22
Birmingham, US
★★★★★ 5
The best bone you can get for pitbulls!
Size: Large (Pack of 1)
Can I give these more than five stars? Please?? They truly deserve more than that! I have bought these bones for the last 2 years for my pitbull mix, who is a very aggressive chewer. Her favorite thing to do is just lay and chew. These bones last FOREVER! She can lay there and chew all day long and they will last her MONTHS! It’s honestly amazing! These are the best bones we’ve ever given her and they are the only ones we’ll buy her! Not only do they last forever, they’re safe and natural too! Best product ever!
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Reviewed in the United States on January 10, 2026
D
Verified Purchase
Dee
Birmingham, US
★★★★★ 4
Great for aggressive chewers, but small mess
Size: Large (Pack of 1), Size: Large (Pack of 1)
He took it right away! It’s a great size. We’ll see how it holds up ONE MONTH UPDATE: (photo included) He loves it still! Still a bit messy but holding up great and he’s a aggressive chewer 1 WEEK UPDATE (photo update included) The bone is great. He loves it and it’s been holding up great. Our 8 month puppy is a super chewer and 60 lbs. the bone has signs of wear but nothing crazy. I went from 5 stars to 4 stars because whenever he chews the bone, the small tiny pieces of bone/wood go everywhere and they’re sticky/hard and make kind of a mess. But still would get this bone again and highly recommend
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Reviewed in the United States on December 16, 2025
H
Verified Purchase
hellothere
Alexandria, US
★★★★★ 5
Dog loves these
Size: X-Small (Pack of 1)
These are the best chew toys. They are reasonably priced and last a long while. Fast shipping.
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Reviewed in the United States on March 8, 2026
V
Verified Purchase
Vanessa
Massapequa, US
★★★★★ 5
Made for aggressive chewers
Size: Small (Pack of 1)
My aggressive chewers are obsessed. This is one of the only chew toys that actually lasts for them. Always have to buy 2 so they each have their own
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Reviewed in the United States on February 28, 2026

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