Project 1

Statement of assignment:

Route the Wiring harness on Given Engine and Prepare flatten view drawing in CATIA V5. Application of all Packaging rules, Industry best practices studied in this course shall be demonstrated in design. Apply Protection coverings as required.

Available connector 3D data can be used, or you can download the connectors from www.te.com

Prepare & Submit all necessary reports like clearance, Clipping/Clamping selection, Harness fixing requirements, Harness continuity, Assumptions if any along with CATIA 3D data.

Engine cad data to be downloaded from www.grabcad.com

Engine file

CAD Files

Objective:

The objective of the project is to route the wiring harness on given Bugatti V16 Engine and prepare flatten view drawing in CATIA V5. All types of packaging rules have to be considered while routing the harness. Also, Industry best practices should be demonstrated in design. All the necessary details like clearance, clipping/clamping selection, harness fixing requirements, harness continuity should be provided in order to design wiring harness.

• The above figure shows the 16 valve Bugatti Engine where 8 cylinders are placed on the right side and 8 cylinders are placed on the left side.
• There are total 16 injectors where 8 injectors are used for 8 cylinders on right side and 8 injectors are used for another 8 cylinders on left side.
• Also there are 4 cam-shaft sensors, so there are total 20 sensors that we have to connected electrically.
• Generally, 4-pole connectors are used for fuel injectors of the engine.
• The engine will also have an interconnection connector which will connect the engine to other parts of the vehicle. We will be using a 12-pole electrical connector with a mounting clip feature as an interconnection connector.
• The plastic guiding channel used in this harness should bemade of a material that can withstand at least 150 degree Celcius.
• The bend ratio for the all bundle segmets should be 1.4
• 16 valve Bugatti Engine

Assumptions-

1. Provide clips/clamps as per requirement.
2. Make sure that there is no any fauling case while designing the wire harness. Additional clips/clamps may be used to avoid fauling case.
3. Give additional slack if needed. 5-15% slack is sufficient.
4. Avoid routing on sharp edges or else provide protection over the harness.
5. Follow the clearance distance and keep away the harness from heat generation components.
6. Protection should be provided as needed according to surrounding temperature.
7. Avoid direct support for harness on fuel lines routed in the engine.
8. Use plastic guiding channels if needed.
9. Branch length should be greater than 50mm.
10. Minimum distance between two branch points should be at least 50mm.
11. Minimum distance between clip and branch point should be at least 25mm.
12. Avoid too many sheet metal brackets on the engine.
13. The wiring harness should be easy to assemble and easy to access. 
14. While using dummy connectors, ensure that whatever positions you are defining that are practical. Bundle diameters and another placements can be defined properly for the wire harness routing.
15. If the packaging area is too tight and there are many packaging constraints then we can think of creating harness channel which can be used to route and protect the wire harness effectively.

Step 1: Creating Context Assembly

• A Context Assembly for Engine Harness has created which will work as the main assembly as shown in above figure.
• A Context Assembly will contain Engine Assembly data for Bugatti V16 Engine and Engine Harness Geometrical Bundle Assembly.
• If any sheet metal bracket will require then they are added in the context assembly.

Step 2: To define 4-pole connector electrically

We have to define all the connector that is 2 pole, 3pole, 4 pole and 12 pole interconnection connector as an electrical part by define as connector connection point and bundle connection point.

Also define the clip and channels that is needed as an electrical part.

12POLE CONNECTOR

4 POLE CONNECTOR

3 POLE CONNECTOR

2 POLE CONNECTOR

L_CLIP

FIR TREE CLIP

P CLAMP

CAVITY CLIP

CHANNEL RH

CHANNEL LH

Step 3: Adding connectors to the all 16 fuel injector sensors and 4 cam-shaft sensors

In this step, we are placing connectors to fuel injector sensors and cam-shaft sensors. So we will require total 20 connectors which have to be added in the Engine Harness Geometrical Bundle Assembly. We have to use manipulation tools along with compass, snap and smart move features to locate all the 20 connectors at their desired locations.

Step 4: Adding sheet metal bracket

Step 5: Mounting the interconnection connector on the sheet metal bracket and mounting the p-clamps for wire harness

Step 6: Mounting of a plastic guiding channel

Step 7: Bundle routing from Interconnection connector to 3 P-clamps

Step 7: Bundle routing from Interconnection connector to 3 P-clamps

Step 9: Routing to the plastic guiding channel

Step 10: Adding branch points to bundle segment inside the guiding channel

Step 11: Adding protective coverings and guiding channels top shell to harness bundle

Step 12: Checking bundle continuity

In this step, first we have to make sure that multi-branchable is selected then we have to go in Edit>Search>Advanced>Workbench-Electrical>Type-Bundle Segment>Attribute-Fully Connected 

• By selecting 'True' option will show all the connected bundle segments while selecting 'False' option will show all the non-connected bundle segments. 
• Here, we have selected for the 'True' option and searched for results. All the bundle segments are highlighted found showing that all the bundle segments are electrically connected

Step 12: Create electrical harenss flattening

now by using electrical harenss flattening we can straight or flat all the wire connected with the connectors.

Step 12: Create harness Drawing