Patented airflow system decreases pollutants from large piston engines

Patented airflow system decreases pollutants from large piston engines
This is a figure of the air control system from the patent paperwork. Credit: Kansas State University

A patent was recently issued to Kansas State University for a system that controls the airflow to pistons in reciprocating internal combustion engines—engines powered by pistons.

The system enables large-bore, multi-cylinder engines used in trains, pipelines, backup diesel generators and other fields to run efficiently while producing lower levels of than they do currently.

The patent, "Active Air Control," was issued to the Kansas State University Research Foundation, a nonprofit corporation responsible for managing technology transfer activities at the university. The is for research by former faculty member Kirby Chapman and doctoral graduate Diana Grauer.

The Kansas State University-developed system uses an airflow sensor to measure and control the airflow rate into each piston in real time. Algorithms adjust the accordingly and equalize the rate in multiple cylinders at the same time. This reduces the levels of nitrogen oxides produced during combustion in the engine.

The air control system offers a low-cost method to control and lower the production of and helps legacy engines meet compliance with EPA 2011 regulations. The system also was designed to fit various engine systems.


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Citation: Patented airflow system decreases pollutants from large piston engines (2014, February 13) retrieved 20 July 2019 from https://phys.org/news/2014-02-patented-airflow-decreases-pollutants-large.html
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Feb 14, 2014
Low cost to start, eight sensors and valve actuators to fail later.

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