Can a four-cylinder diesel engine burn steam instead?

It is possible for diesel engines to burn gas, but the change is relatively large.

Generally, it is a single fuel system after the change, that is, only gas can be burned, and diesel cannot be burned back. It should be noted that this is different from the ventilation of gasoline engines. Gasoline engine to gas is a dual-fuel system, which can burn both oil and gas.

Ordinary individuals are difficult to change, and modification manufacturers do not provide such support. Unless the engine manufacturer or bus company replaces it in batches. This is also different from changing gasoline engines to gas.

At present, buses in many cities are single fuel systems modified by engine manufacturers in batches, and diesel cng dual fuel systems are rare. If there is, it is also a pre-installed system. When engine manufacturers produce them, they are dual-fuel systems. The main way is to burn diesel with natural gas. The system has not been modified yet.

It is estimated that there will be more people asking this question. Here are the general steps of modification:

1. First, change the piston and reduce the compression ratio.

2. Install the crankshaft position signal panel.

3. Modify the injector hole of the cylinder head to install the spark plug.

4. Modify the camshaft and install the camshaft position sensor. (Some systems may not be installed)

5. Remove the diesel supply system.

The above is the transformation of the mechanical part of the engine. It is also necessary to install electronic control, gas supply and ignition components:

1. Add gas cylinders, pressure reducers, filters, cng high-pressure electromagnetic valves, pipelines, gas valves, etc.

2. Install air nozzle, air rail, mixer, electronic throttle, electronic accelerator pedal, EFI ecu, various sensors and wiring harness.

3. Install the ignition coil and spark plug.

4. Calibration of EFI system.

The above is the modification of EFI system. Of course, there is also a low-cost scheme, that is, using a mechanical cng mixer, and the electronic control part is only responsible for ignition. I won't go into details.