Need a simple design for Piston(spring?)/Crankshaft

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In summary, the individual is seeking design ideas for a piston and crankshaft system where the crank only rotates during the power stroke and the piston can return to its initial position without any rotation of the crank. They are specifically looking for a design that allows the crank to "slide" in the same direction as the piston while the piston is being pulled away from the crank shaft. One suggestion is to use a ratchet mechanism between the crankshaft and the manually operated crank.
  • #1
swightness
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I am looking for a piston/crankshaft design that the crank would only rotate during the power stroke, and the piston can return to the initial position without any rotation of the crank. The piston is manualy operated, so there is no worry about momentum at the bottom of the cycle. Any thoughts?

Thank you,

JH
 
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Need a piston/crank design where Crank only turns on power stroke

I need design ideas for a piston (that is operated by a human using a push/pull mechanism) that rotates a crank only on the power stroke (where the piston is moving towards the crank) Because it is manually operated, is it possible to have some sort of crank design where it operates just like a normal 2-stroke engine on the power stroke, and once the piston is at the low point (and the entire system is in rest), there is some mechanism that allows the crank to "slide" in the same direction as the piston while the piston is being pulled away from the crank shaft? Any other design idea that would allow the crank to only turn as the piston is moving towards the crank shafe would help. Thank you
 
  • #3
(Two threads merged -- please do not multiple post)

Can you just use a ratched mechanism between the crankshaft and the manually operated crank?
 

FAQ: Need a simple design for Piston(spring?)/Crankshaft

What is the purpose of a piston(spring)/crankshaft design?

The piston(spring)/crankshaft design is used in internal combustion engines to convert the energy from the fuel combustion into mechanical motion. The piston(spring) moves up and down inside the cylinder, while the crankshaft converts this linear motion into rotational motion.

How does the piston(spring)/crankshaft design work?

The piston(spring)/crankshaft design works by utilizing the expansion of gases during the combustion process to move the piston(spring) up and down. The connecting rod attached to the piston(spring) moves the crankshaft, which rotates and transfers the energy to the wheels of a vehicle or other mechanical devices.

What materials are typically used in a piston(spring)/crankshaft design?

The materials used in a piston(spring)/crankshaft design vary depending on the type of engine and its intended use. However, common materials include steel, aluminum, cast iron, and various alloys. These materials are chosen for their strength, durability, and ability to withstand high temperatures and pressures.

What are the benefits of a simple design for piston(spring)/crankshaft?

A simple design for piston(spring)/crankshaft offers several benefits, including reduced manufacturing costs, easier maintenance, and improved efficiency. The simpler the design, the fewer parts and components are required, making it easier to assemble and maintain. Additionally, a simple design can also reduce the overall weight of the engine, increasing its efficiency and performance.

Are there any common issues or challenges with a piston(spring)/crankshaft design?

One common issue with a piston(spring)/crankshaft design is engine knocking, which occurs when the air-fuel mixture ignites before the piston(spring) reaches the top of its stroke. This can cause damage to the engine and decrease its efficiency. Proper tuning and maintenance can help prevent this issue. Another challenge is balancing the weight and motion of the pistons(spring) and crankshaft to reduce vibration and improve engine performance.

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