Multiple fuel-type compression ignition engines and methods

摘要

A compression ignition engine includes a high pressure injector for injecting a liquid fuel into a first combustion cylinder and a low pressure injector for injecting a gaseous fuel into a second combustion cylinder. A controller is coupled to the high pressure injector and the low pressure injector. The controller selects one of a liquid fuel mode and a gaseous fuel mode. If the liquid fuel mode is selected, air is compressed in a first cylinder, the compressed air is transferred to a second cylinder, and the liquid fuel is injected into the second cylinder. If the gaseous fuel mode is selected, air is compressed in the second cylinder, the compressed air is transferred to the first cylinder, and the gaseous fuel is injected into the first cylinder.

主权项

1. A compression ignition engine comprising:
a first combustion cylinder; a high pressure injector for injecting a liquid fuel into the first combustion cylinder; a second combustion cylinder; a low pressure injector for injecting a gaseous fuel into the second combustion cylinder; a controller coupled to the high pressure injector and the low pressure injector, the controller performing operations including
selecting one of a liquid fuel mode or a gaseous fuel mode;if the liquid fuel mode is selected,compressing air in a first cylinder,transferring the compressed air to a second cylinder, andinjecting the liquid fuel into the second cylinder; andif the gaseous fuel mode is selected,
compressing air in the second cylinder;transferring the compressed air to the first cylinder; andinjecting the gaseous fuel into the first cylinder.