Patent ID: 11873773
Assignee: HONDA MOTOR CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 0:
1. A system for early camshaft position detection in an encoded crankshaft system, the system comprising:
a processor; and
a memory configured to store instructions that when executed by the processor cause the processor to:
determine a crankshaft angular position of a crank pulse wheel based on electronic signals received from vehicle sensors, wherein the crank pulse wheel is associated with an engine cycle including a first crankshaft rotation and a second crankshaft rotation;
receive a sensed camshaft value for a camshaft wheel having a camshaft rotation in the engine cycle based on a camshaft signal from a camshaft sensor, wherein the engine cycle is defined by a single camshaft rotation and the first crankshaft rotation and the second crankshaft rotation;
determine if the engine cycle is in the first crankshaft rotation or the second crankshaft rotation of the crank pulse wheel based on the crankshaft angular position of the crank pulse wheel and the sensed camshaft value; and
control engine operation based on the determination of whether the engine cycle is in the first crankshaft rotation or the second crankshaft rotation of the crank pulse wheel,
wherein the electronic signals identify a tooth type for N number of teeth on the crank pulse wheel in a sliding buffer based on at least one tooth characteristic, wherein N is a positive integer less than a total number of teeth of the crank pulse wheel, and wherein the instructions further cause the processor to:
calculate a buffer value for the sliding buffer corresponding to the N number of teeth represented in the sliding buffer.