US 12,313,018 B2
Systems and methods for controlling a vehicle engine
Adam H. Vosz, Delaware, OH (US); Tomoharu Hozumi, Saitama-ken (JP); Benjamin C. Schwartz, Lewis Center, OH (US); Cameron S. Daley, Canton, CT (US); Dylan P. Antonides, Marysville, OH (US); and Nicholas R. Pratt, Marysville, OH (US)
Assigned to Honda Motor Co., Ltd., Tokyo (JP)
Filed by Honda Motor Co., Ltd., Tokyo (JP)
Filed on Mar. 15, 2023, as Appl. No. 18/184,492.
Prior Publication US 2024/0309827 A1, Sep. 19, 2024
Int. Cl. F02D 41/38 (2006.01); F02B 75/18 (2006.01); F02D 41/00 (2006.01); F02D 41/14 (2006.01); F02D 41/30 (2006.01)
CPC F02D 41/38 (2013.01) [F02B 75/18 (2013.01); F02D 41/0087 (2013.01); F02D 41/1454 (2013.01); F02D 41/3017 (2013.01); F02B 2075/1824 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control system for a vehicle, the control system comprising:
an engine comprising one or more cylinders, each of the one or more cylinders including at least one fuel injector associated therewith;
a vehicle exhaust system coupled in fluid communication with the engine for receiving exhaust gas therefrom;
at least one sensor coupled to the vehicle exhaust system to detect an air-to-fuel ratio of the exhaust gas; and
an engine electronic control unit (ECU) communicatively coupled to the at least one sensor and the at least one fuel injector of each cylinder, the ECU comprising memory and at least one processor, wherein the ECU is configured to:
store a plurality of patterns each including a sequence of operating states of the one or more cylinders;
receive one or more signals about current operation the engine;
determine a sequence of recent operating states based upon the one or more signals about the current operation of the engine;
compare the sequence of recent operating states to the plurality of patterns to determine a current operating state for the engine;
determine, based on the current operating state, expected air-to-fuel ratio (ATFR) value data;
receive, from the at least one sensor, actual air-to-fuel ratio (ATFR) value data;
determine a difference between the expected and actual ATFR value data; and
control operation of the at least one fuel injector based on the determined difference.