Four-stroke engine. An AutoCAD assembly from my engineering year.

Ten engine components drawn and assembled in AutoCAD.

Engineering · AutoCAD project · B.Sc. Industrial Technologies Engineering · URJC (ESCET) · 2024

Project details

Role: Drawing and assembly
Course: AutoCAD project · B.Sc. Industrial Technologies Engineering · URJC (ESCET)
Year: 2024
Tools: AutoCAD

Brief.

The project models the key components of a four-stroke automotive engine. The assembly includes rocker arms, camshaft, injector springs, fuel injectors, connecting rods, pistons, crankshaft, timing system, engine housing and cylinder head, plus every screw, bolt, nut and pin that holds them.

Technical drawings. Every part, dimensioned.

Sixteen AutoCAD sheets, one per part, from the assembly to the fasteners.

Assembly — three views and section A-A

Rocker arm — dimensioned views

Camshaft — views and section A-A

Nut — plan and side view

Intake valve — dimensioned views

Gudgeon pin — side and end view

Flywheel bolt — thread detail

Connecting-rod bolt — thread detail

Connecting rod — views and section A-A

Piston — sections A-A and B-B

Bearing cap — dimensioned views

Crankshaft — front and top views

Crankshaft flange — plan and section B-B

Clutch — toothed disc, plan and section

Engine block — plan and elevations

Sump — section A-A

What the sheets show

The set starts with the assembly, then runs through the rocker arm, camshaft, valve, bolts, connecting rod, piston, crankshaft, flywheel, block and sump.

Each sheet has orthographic views, dimensions, sections where a part is hollow, and a 3D view of the part.

CAD sheets. Shaded and wireframe.

The same model shown shaded and as wireframe.

Model views

Two views of the 3D model: one shaded, one wireframe.

Exploded view. How the parts stack.

The exploded view separates the assembly part by part.

Exploded view

The exploded view pulls the assembly apart along its axes. The scroll sequence on the home page runs through the same engine.

One year of engineering. This engine is from it.

Next project

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