What changes are required to convert diesel engine to make CNG/LPG driven?

Answer 1

to bring to your knowledge Lpg/Cng would not get installed on a disel engine for that you have to replace your engine with a petrol one or buy a car having a petrol engine..
And for converting a petrol car into a cng or a lpg. You have to get a kit installed for LPG or a Cng kit remember both kits are different. you can't run your car on LPG if you have CNG kit installed and vice versa.

Answer 2

There are a lot of Changes to be made if CNG is to used in Diesel engine.
1. The Cylinder head need to be changed as we need to install the Spark plugs instead of the Fuel Injectors( Diesel) .
We need to reduce the compression Ration from 21:1 (approx) to 9: 1( for CNG).

2. We need to install a firing / Ignition device to send spark to the spark plug.

We need to change the Manifold or modify the existing manifold to plumb the gas ( CNG ) into the inlet manifold

3. We need to install the Venturi to control the gas / air mixture

Then of course we need to change the piston / cylinder head etc and all these changes will involve a complete engine change.
Hence to convert a Gasoline ( Petrol) engine to CNG is much easier. You will also need a tming device for the ignition system and many other changes as well which I can discuss in detail if needed,

Answer 3

Convert Diesel To Cng

Answer 4

I think you can only convert petrol engines to run on LPG too, not diesel.

Answer 5

Yes. If compressed air is used in place of injector you can run a diesel engine. During the power stroke injector has to allow compressed air to push the piston. Auto sensors are to be used to allow the compressed air into the cylinder before TDC in compression stroke. But creating /storing compressed air is a costly affair.

Answer 6

A new engine. It can't be done.