Single-Cylinder Engine

Created in: Siemens NX 12 Updated on: Jan 3, 2022

Summary

This project was started back in March 2021, where I intended to apply my technical knowledge of cars and my passion for cars, to design and 3D model a single-cylinder engine in Siemens NX. The motivation for this project came from wanting to expand my expertise in CAD modelling by modelling in another software, as well as to express my design creativity when it comes to engine design. This single-cylinder engine features all the major components found within a regular I.C.E, such as crankshaft, piston, conrod assembly and other components.

This is the first design iteration of this engine and I plan on continuing to improve it as I progress through my degree and learn more about engines and thermal efficiency. I hope that after multiple iterations, I can try to construct a working prototype of this engine in the near future.

Motivation

The motivation for this project came from my deep knowledge and passion for cars. I have always been fascinated by vehicles and their inner workings, always wanting to know what cars have which engines and how those engines are unique in their own way. As a result, I tasked myself with designing a simplified single-cylinder internal combustion engine (ICE) that would be able to replicate all the main functions of a typical I.C.E. To help me improve as a learning engineer, I decided it would be best to 3D model this in a CAD software I hadn't used before, so I chose Siemens NX 12 so that I can expand my CAD modelling techniques.

Objective

To design and 3D model my own single-cylinder internal combustion engine with all major engine components
Incorporate my own design creativity into engine component design

Components

Crankshaft

The current crankshaft featured in this engine is designed for a single piston. It incorporates the major crankshaft design elements, such as the main journal, main bearing journal, counterweights and the flywheel mounting flange.

Engine Block

The bottom engine block/oil pan is constructed of two similar halves. This pan is intended to store the oil that an engine typically uses, as well as serve as a mounting location for the top engine block (cylinder head).

Connecting Rod

The connecting rod used in this engine follows similar design principles to the connecting rod found in most engines. It is constructed of the main connecting rod as well as the connecting rod end cap. It also has bolt locations on the end cap to secure it to the crankshaft.

Piston

The single-piston in this engine follows similar design principles to common engine pistons. It features 3 ring locations for the top compression ring, second compression ring and the larger oil rings. All dimensions of this piston ensure it will mate appropriately with the piston pin as well as the cylinder bore.

Cylinder Head

The cylinder head featured in this engine is slightly different compared to ones found in typical a I.C.E, since this is suited for a single cylinder. It features holes and pathways for the spark plug as well as the intake and exhaust gases to the combustion chamber. It also has cooling fans surrounding the construction of the component.

Additional Pictures

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