Engine Management Using Knock Data

摘要

A computer-implemented platform may comprise hardware and software configured to manage an engine using knock intensity data. Knock intensities from a plurality of combustion cycles may be used to estimate a statistical distribution of knock intensities. The distribution of knock intensities may be used to determine a Descriptive Statistic, which may represent a state of tune of the engine. A calculated Descriptive Statistic may be compared to a desired Descriptive Statistic (e.g., that is representative of operation during a desired tune state of the engine). A deviation between the calculated and desired knock intensity distributions (e.g., between the calculated DS and desired DS) may be used to adjust a control parameter of the engine. Adjustment may be engine-wide. Adjustment may be cylinder-by-cylinder.

主权项

1. A system (120) comprising:
computing hardware comprising a computer readable, non transitory storage medium (230) coupled to a processor (210) and a memory (220), the processor configured to communicate with a sensor (130) and an engine control unit (150) configured to operate an engine (101), the sensor configured to sense knocking within a cylinder (110) of engine (101) during a combustion cycle, the storage medium having embodied thereon instructions executable by the processor to perform a method (800) stored in the memory, the method comprising: identifying a window of combustion cycles; measuring a knock intensity for each of a plurality of combustion cycles within the window; calculating a descriptive statistic (DS) describing a distribution of the measured knock intensities; comparing the calculated DS to a desired DS, the desired DS representing a desired distribution of knock intensities; and adjusting a control parameter of the engine when the calculated DS deviates from the desired DS by an amount greater than a threshold.