CONTROLLER AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE: abstract simplified (18193702)

• This abstract for appeared for patent application number 18193702 Titled 'CONTROLLER AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE'

Simplified Explanation

The abstract describes a controller that is designed to control the operation of an internal combustion engine. The engine can perform both multi-shot injection (injecting fuel multiple times during each combustion cycle) and single-shot injection (injecting fuel only once per cycle). The controller also has a feature that deactivates certain cylinders by stopping the fuel supply to them while continuing to supply fuel to the remaining cylinders.

When the deactivation process is terminated and fuel needs to be supplied to a previously deactivated cylinder, the controller initiates a retarding process. This process involves injecting fuel into the cylinder using single-shot injection, but with a delayed start timing compared to when multi-shot injection is used. Essentially, the retarding process adjusts the timing of fuel injection to ensure smooth reactivation of the cylinder.

Original Abstract Submitted

A controller is configured to control an internal combustion engine. The internal combustion engine may execute multi-shot injection and single-shot injection and execute a deactivating process that stops supplying fuel to at least one of cylinders and supplies fuel to the remaining cylinders. The controller is configured to execute, when terminating the deactivating process to restart supplying fuel to a deactivated cylinder in which supply of fuel is stopped, a retarding process that executes a first fuel injection through the single-shot injection and retards a fuel injection start timing as compared to when executing the multi-shot injection.