DUAL FUEL INJECTION SYSTEM

摘要

A method of controlling fuel injection in a dual fuel engine system includes determining, with a first controller, a diesel injection pulse indicative of a first amount of diesel fuel to be injected into a combustion chamber of the engine and a first timing at which the first amount of diesel fuel is to be injected. The method also includes determining, with a second controller, a combined injection pulse based on the diesel injection pulse. The method further includes injecting the second amount of diesel fuel and the third amount of natural gas into the combustion chamber in accordance with the combined injection pulse. In such a method, injection in accordance with the combined injection pulse results in a combustion event characterized by a second combustion characteristic substantially equal to a first combustion characteristic associated with the diesel injection pulse.

主权项

1. A method of controlling fuel injection in a dual fuel engine system, comprising:
determining, with a first controller, a diesel injection pulse indicative of a first amount of diesel fuel to be injected into a combustion chamber of the engine and a first timing at which the first amount of diesel fuel is to be injected, wherein the diesel injection pulse is based on a set of operating parameters associated with the engine and wherein fuel injection in accordance with the diesel injection pulse would result in a first combustion characteristic within the combustion chamber sufficient to satisfy an output demanded of the engine using solely diesel fuel; determining, with a second controller, a combined injection pulse based on the diesel injection pulse, wherein the combined injection pulse is indicative of a second amount of diesel fuel to be injected different than the first amount, a second timing at which the second amount of diesel fuel is to be injected different than the first timing, a third amount of natural gas to be injected, and a third timing at which the third amount of natural gas is to be injected; and injecting the second amount of diesel fuel and the third amount of natural gas into the combustion chamber in accordance with the combined injection pulse, wherein the injection in accordance with the combined injection pulse results in a combustion event characterized by a second combustion characteristic substantially equal to the first combustion characteristic.