Fuel Injection Nozzle with Full Length Video tutorial

In this video tutorial we will be modeling a Fuel Injection Nozzle or Atomiser based on 2d assembly drawing. In this video I will explain how to approach such drawings and reading all the dimensions. This is a full length video in which every single concept, basics and tricks will be covered related to Assembly Modeling.

The purpose of the fuel injector, atomizer or nozzle, as it is called, is to atomize or break the fuel into fine particles and to direct the spray into the combustion chamber so that every fuel particle mixes with the air compressed in the cylinder. In order to achieve this, injection takes place through very fine holes in the nozzle body at a pressure of about 160kg/cm^2.

The only tricky part of modeling is some missing dimensions and assuming them. If you want model or 2d drawing let me know in comment section or message us on our facebook page. This model is CFD ready. You can use this model for CFD simulation of Fuel injection nozzle. I know many of you use Flow simulations and need more models like this. 

For Video Tutorial :- 
1. Main Body
2. Other Parts of Assembly
3. Assembling all parts

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Steam Stop Valve Assembly Drawing Full Length Video Tutorial with Expert guidance

This drawing was one of the most complex drawings in P.S.Gill Drawing book. There were times during my engineering course when I started this drawing and failed to complete it as I lacked the workshop/toolroom experience which is a must to completely understand this drawing.

As always P.S.Gill have removed some dimensioned intentionally so we will need to use whole assembly dimensions in order to fully design this part. There was a note written below the drawing which said, 

"Assume, proportionately, any dimension missing". 

To assume these dimension, we need some expertise with such Drawings and some workshop/toolroom experience. As I mentioned earlier that I lacked that experience before, now I had enough experience to completely read all the dimensions in between the dimensions to completely draw it.

I have assumed dimensions too, but keeping proportions and other dimensions in mind. We can't assume any dimension randomly. I had used top-down and bottom-up design approach simultaneously to ensure Everything is completely defined. Finally, I have also created a video tutorial for the same in which I have explained the modeling procedure, reading drawing and all other steps necessary. This video is a bit long 153 minutes(2 hour 33 minutes, i lost track of time 😅) but it covers nearly everything related to this assembly. I watched some other video Tutorials also, but everyone had made some mistakes or missed out some Details. I am sure your drawing reading skills will increase by a big level after you have completed this assembly drawing after watching this video tutorial.

If you need the SW file or the 2D  you can download it from here. If you still had any problem regarding this assembly, you can message in the WhatsApp, Facebook, Telegram group or even comment here. Thanks for giving your precious time to read my post.

Video Tutorial :- https://youtu.be/WgaqCeYHvuA 

Automotive Carburetor Body Drawing

Various component parts of a carburetor are either housed in or mounted on a main component called the carburetor body. It is usually made of aluminium. In this video tutorial we will be designing an Automotive Carburetor Body in SolidWorks. The drawing used is from Machine Drawing by P.S.Gill Fig 28.10. It was not very difficult to model, but the main focus here is how to order feature tree.


I have attached the 2D drawing here. 

For Video Tutorial

Torsen Differential

The Torsen differential works just like a conventional differential but can lock up if a torque imbalance occurs, the maximum ratio of torque imbalance being defined by the Torque Bias Ratio (TBR). When a Torsen has a 3:1 TBR, that means that one side of the differential can handle up to 75% while the other side would have to only handle 25% of applied torque. During acceleration under asymmetric traction conditions, so long as the higher traction side can handle the higher percentage of applied torque, no relative wheelspin will occur. When the traction difference exceeds the TBR, the slower output side of the differential receives the tractive torque of the faster wheel multiplied by the TBR; any extra torque remaining from applied torque contributes to the angular acceleration of the faster output side of the differential.

Torsen differentials are used in many of the various Audi Quattro models, excluding the A3 & S3 and TT (which have transverse-mounted engines and use Haldex Traction 4WD systems).

 

 

 

 

 

 

 

 

 

Epicyclic differential 3D Model/Simulation

An epicyclic differential uses epicyclic gearing to split and apportion torque asymmetrically between the front and rear axles. An epicyclic differential is at the heart of the Toyota Prius automotive drive train, where it interconnects the engine, motor-generators, and the drive wheels (which have a second differential for splitting torque as usual). It has the advantage of being relatively compact along the length of its axis (that is, the sun gear shaft).

Epicyclic gears are also called planetary gears because the axes of the planet gears revolve around the common axis of the sun and ring gears that they mesh with and roll between. In the image, the yellow shaft carries the sun gear which is almost hidden. The blue gears are called planet gears and the pink gear is the ring gear or annulus.

 

 

Here is Video Tutorial for SolidWorks

 

Axial Vector Engine

A swashplate is rigidly fixed to the CAMDisk, and goes round with it as a unit. Therefore the connecting rods are not fixed to the plate in any way, but push on it with rollers or slipper pads that can glide over the surface of the plate as it turns. The main point of attraction is the use of CAM-Disk in place of Crank shaft to provide reciprocation. Since the Engine is double Reciprocatory with corresponding strokes at both sides, there is no unbalancing of masses i.e. full balanced. Battery Ignition System is used with a spark plug for each cylinder. There are one inlet and one exhaust for each cylinder. Fins thickness is not calculated but 5mm is more than enough. Fuel Type used is Gasoline and the engine can found application in Aerospace as well as Automotive. Engine is mainly a torque converter type rather than speeder.
Specs:-

Cylinders =12 (6 both sides)
Bore Dia = 80mm
Stroke length = 110mm
Engine Type = Axial Vector Type 4 Stroke
Crank Mechanism = CAM Disk Mechanism
Engine Capacity = 26500cc/1618ci

This model is also winner for CADD Centre Training Services Facebook project contest with more than 1000 votes and stood first in more than 590 entries. Also this is my favorite model.

Connecting Rod of Gasoline Engine

Connecting Rod is the connection between the piston and crankshaft. It joins the wrist pin of the piston with the throw or crankpin of the crankshaft. For a given size engine, lighter the connecting rod and piston the greater the resulting power, and lesser the vibration as a result of the decreased reciprocating weight. The connecting rod is split to permit its being clamped round the crankshaft.

This model was part of my Advanced CAD/CAM lab assignment. Had fun modeling it. There is a funny incident related to it. I was unable to read the distance between the lower split of the connecting rod circular part with the upper circular part. Whole night I tried to understand and finally slept without getting the problem solved. That night I solved this problem in my dream and when I woke up I had the solution. So rather than preparing for college I took 24 minutes to model this drawing.

Had very fun modeling it.