APPARATUS FOR CONTROLLING THE FUEL SUPPLY OF AN INTERNAL COMBUSTION ENGINE

摘要

On the basis of a decrease in a high-pressure detection value and a low-pressure detection value during fuel control using a CNG injector, an electronic control unit automatically switches the combustion control to combustion control using a gasoline injector even when the amount of CNG remaining is insufficient. When the first shutoff valve is forcibly switched to an closed state by inputting a forcible shutoff command of a first shutoff valve to a terminal and the combustion control using the CNG injector is performed, a switching process to the combustion control using the gasoline injector is inhibited regardless of the decrease in the high-pressure detection value and the low-pressure detection value.

主权项

1. A fuel supply control device for an internal combustion engine, the fuel supply control device comprising:
a first injector configured to supply gaseous fuel to a combustion chamber of the internal combustion engine; a first shutoff valve configured to shut off a fuel supply passage between a first reservoir unit and the first injector, the first reservoir unit being configured to store the gaseous fuel to be supplied to the first injector; a second injector configured to supply fuel to the combustion chamber, a first passage that is a passage between the first shutoff valve and the first injector out of the fuel supply passage being different from a second passage for supplying fuel to the second injector; and an electronic control unit configured to perform a switching process of switching a mode in which combustion control of the internal combustion engine by fuel injection control using the first injector is performed to a mode in which combustion control of the internal combustion engine by fuel injection control using the second injector is performed, the electronic control unit being configured to inhibit the performing of the switching process when a communication state of the fuel supply passage is a closed state in which the first shutoff valve shuts off the fuel supply passage and the combustion control using the first injector is performed.