Engine Ventilation Breach Detection via Pressure Sensor

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Solution Overview

Problem

Current engine ventilation systems lack effective diagnostic methods to detect breaches, which can lead to the unintended release of combustion gases into the atmosphere, necessitating improved pressure measurement and detection technologies.

Innovation Solution

A system comprising a pressure sensor in fluid communication with the air intake and a processor that determines breaches in the ventilation system by measuring pressure differences, utilizing a compressor and oil separator to detect vacuum communication issues, and employing filtering techniques to accurately diagnose system faults.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If no diagnostic system is installed, then the system remains simple, but breaches in the ventilation system cannot be detected

Engineering Contradiction:
Improvebreach detection capabilityVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical diagnostic systems with a pressure sensor-based detection system. The pressure sensor measures pressure differentials across the ventilation system to detect breaches, substituting mechanical inspection methods with a simpler electronic sensing approach that maintains reliability while reducing complexity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The ventilation system performs self-diagnosis through the pressure sensor that continuously monitors system integrity. The system automatically detects breaches without requiring external diagnostic equipment or manual inspection, enabling the system to monitor itself and maintain reliability through autonomous detection.

Inventive Principle:
Principle #25Self-service

2Measurement precision

If pressure measurement is implemented, then breach detection is enabled, but measurement precision requirements increase system complexity

Engineering Contradiction:
Improvepressure measurement accuracyVSAvoidmeasurement system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces a differential pressure sensor as an intermediary device that measures pressure differences across the ventilation system. This intermediary measurement approach enables precise breach detection by comparing pressures on either side of potential leak points, achieving high measurement precision through a relatively simple sensor configuration.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system detects breaches by monitoring changes in pressure parameters rather than requiring absolute precision measurements. By measuring pressure differentials and detecting deviations from expected pressure relationships, the system achieves reliable breach detection through parameter change monitoring rather than high-precision absolute measurement, reducing system complexity.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables reliable detection of ventilation system breaches, preventing gas leaks and ensuring efficient engine operation by accurately determining pressure changes and system integrity through real-time vacuum measurement and processing.

Implementation Method 1

a pressure sensor disposed in fluid communication with the air intake and disposed between the air intake and the chamber

Methodology Applied
Scientific EffectPressure measurement:

Data Source

PatentUS9983088B2Engine ventilation system diagnostics using pressure measurement
Publication Date: 2018.05.29 CUMMINS INC
  • US9983088B2 patent drawing
  • US9983088B2 patent drawing
  • US9983088B2 patent drawing

AI summary

A system comprising an engine including a chamber; an air intake coupled to the engine; a pressure sensor disposed in fluid communication with the air intake and disposed between the air intake and the chamber; and a processor configured to determine a breach in a ventilation system of the chamber in response to the pressure sensor.