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Fuel injected gasoline engines can not burn diesel fuel because of some number of reasons.

GASOLINE ENGINE
Computer injected, spark ignited, Low torque: total ignition at or before TDC

DIESEL ENGINE
Mechanical direct injection, Compression ignition, High torque: Prolonged diesel ignition throughout stroke

Solution to conversion

1 Injection system: Diesel injection pump, two Ignition system: Injection line heating to above autoignition, three High Torque: change injection pump to decrease injection length at all speeds

Ok, so how can we do this?

Replace spark plugs with diesel injectors, and remove gasoline fuel injectors. Install pulley driven diesel fuel injection pump on the engine and connect fuel lines to the injectors.

So, the fuel will be delivered to each cylinder at TDC as the pump rotates.

How to ignite it?

Heat each injector line to above autoignition temperature with an electric cable heater wrapped around it. This lets cold, low compression air to ignite with fuel already at autoignition temperature. High compression air isn't needed.

Now that you're setup how can you make the system create less torque so you do not destroy that gasoline engine block?

Gasoline engines can not handle the torque levels of a diesel, they wear out quickly. The supply of diesel torque isn't the fuel, but the prolonged injection of diesel during the power stroke.

Modify a diesel injection pump to a short injection pulse while at slow speed. This usually only happens when the pump is at quick. If the fuel is injected quickly rather than in an expanded injection down the power stroke, torque will drop. All the while maintaining exact timing of injection and power of the engine.

You could just use a bigger injection pump pulley, but timing of injection will be off.



Now some possible feasibility conditions:

1 heated fuel results in coked clogged injector two Injector loses lubricity and wears out caused by loss of viscosity caused by fuel heating three Fuel line connection failure caused by heat four Injection length isn't short enough at low throttle on injection pump which results in engine damaging torque

3 weeks ago
I'm not looking for same efficiency. I'd change to run on biodiesel, svo, wvo. Cost of diesel engine is high. Plus labor.

Problem: Fuel air swirl and mix in ignition delay before TDC could be the problem. Fuel vaporization time could decrease as fuel is heated way above flash and autoignition temp could help with fuel air mixing.

General motors transformed some 350 V 8's to run on diesel back in the late 1970's 1980's. I had a friend who had a Buick or Olds station wagon that was so equipped. You may attempt some research into that. As I keep in mind the engine was problematic.

But at least I can vouch for the fact that it can and was done. If you may be able to learn what GM did it can be of some help to you. You may find some old shop manuals.

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You are trying to reinvent the wheel. think about the power obliged to heat the fuel to Autoignition now what happens when fluids under pressure are released, a shop air supply.a blow gun on a 90 degree plus day point the nozzle away from you and squeeze the trigger the temp of the air comming out of the nozzle is as much as thirty degrees cooler. you can not gaurantee ignition of a fuel in a spark ignited engine, hence O2 sensors and constant modification of the fuel air mix via clossed loop feer back. your barking at the wrong angle

Omigod,did you post this for grins?.Go read a book on engine design. If you have some spare time could you find a cure for the common cold?

Ok, you want a simple answer: No, it would not work, because you really do not understand what a diesel engine is like.

Why could anybody want to go to the trouble and expense of converting a gas engine to diesel??
That's retarded.Nothing that's transformed from one use to another is as economical as one that's intended for such use. Take the a/c conversions on cars with an r12 system to r134a. It works, but not almost as good as the systems intended for r134a. It does not seem right to change gas to diesel because when the petroleum is gone there will be no more gas or diesel fuel.

First off . Why could you want to? How could you control your fuel timing on a belt driven system? What about the fact that majority modern motors have aluminium heads and some have blocks made of aluminium also. How could you handle that? why don`t you do it with a lawnmower motor and come back and see us

Heating the fuel won't get the ignition you need. Modern diesel engines run a compressions percentage of around 20:1 versus a gasoline engine of around 9:1. that's almost double the pressure. A modern gasoline engine with an aluminum head couldn't handle these pressures.

Adapting an injection pump to belt driven could be troublesome, as the belt stretches, you could lose timing. A most of injection pumps are gear or shaft driven directly off the cam gear.

To install injectors in a gasoline head could require customized parts.

The internals of the gasoline engine could not withstand the direct injection, and combustion of the diesel fuel. You could most probably melt the piston, or bend/break connecting rods under the extreme pressures.

What you propose is possible but could cost tens of thousands of dollars in parts and labor, when you may have spent $5000 and bought a brand new diesel motor.

Save yourself the trouble, sell the gasser, and just purchase a diesel out right.

This can't be accomplished with a gasoline engine due to huge difference in compression percentage.

A diesel engine requires upwards of 25 to one and more compression which the gasoline engine does not have.

i do not know why you could really want to do this, but if you did here is what else you got to do.

it could be more like a diesel if you just get some custom pistons made with high compression. this way you would not have to preheat the fuel like your talking about.

I do not know how well the engine could take that much compression.

you could have to cut o ring groves in the block and heads and get o ringed head gaskets to manage that much compression.

you could have to get some high strength connecting rods.

also it could be a smart idea to strengthen the block with block filler. if you were really wanting to do this I could propose researching ways that people strengthen blocks for racing.

i support you to attempt it and I could like to see how well it works. though it could most likely be more cost efficient to find a diesel and figure out a way to make it fit in your car. because to do this right it could most likely cost a couple thousand dollars. my guess could be about $300 $500 for pistons, most likely about $200 for rods, machining and block strengthening could most likely be about $300.

I think you could have to be worried about the extra compression that could most likely destroy an engine intended to run gasoline.