Fuel injector arrangement

A fuel injector arrangement comprising:

• a first fluid supply path;
• a second fluid supply path;
• a third fluid supply path;
• a first switching device in the second fluid supply path, configured to be controlled based on fluid pressure in the third fluid supply path to controllably open and block the second fluid supply path;
• and
• a second switching device in the first fluid supply path, configured to be controlled based on fluid pressure in the second fluid supply path downstream from the first switching device to controllably open and block the first fluid supply path.

An internal combustion engine, comprising at least one fuel injector arrangement comprising:

• a first fluid supply path;
• a second fluid supply path;
• a third fluid supply path;
• a first switching device in the second fluid supply path , configured to be controlled based on fluid pressure in the third fluid supply path to controllably open and block the second fluid supply path;
• and
• a second switching device in the first fluid supply path, configured to be controlled based on fluid pressure in the second fluid supply path downstream from the first switching device to controllably open and block the first fluid supply path.

A method of supplying fuel, comprising:

• providing fluid pressure to a first fluid supply path in fluid communication with a first switching device in a second fluid supply path;
• opening, by the first switching device and based on fluid pressure in the first fluid supply path, the second fluid supply path to second switching device in a third fluid supply path;
• blocking, by the first switching device and based on fluid pressure in the first fluid supply path, the second fluid supply path;
• opening, by the second switching device and based on fluid pressure in the second fluid supply path, the third fluid supply path;
• and
• blocking, by the second switching device and based on the fluid pressure in the second fluid supply path, the third fluid supply path.