Combustion Engine Fresh Gas Line Turbulence Control
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Solution Overview
Problem
Existing combustion engines face challenges in efficiently increasing turbulence in the combustion chamber while maintaining simplicity and reducing apparatus complexity, particularly when integrated with turbocharging systems.
Innovation Solution
A combustion engine design featuring a fresh air section connected intermittently to the cylinder via a gas exchange inlet valve, equipped with a throttle element and a nozzle following Bernoulli, Venturi, or Coanda flow geometry, and a separate duct with a vortex tube to induce a directional fresh gas pulse, allowing control over charge movement and power boost through air cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate duct with vortex tube is used to induce fresh gas pulse, then turbulence in combustion chamber is increased, but device complexity increases
Solution Approach 1:
The intake air flow is segmented into a main flow through the throttle body and a separate fresh gas pulse flow through the dedicated duct. This segmentation allows independent control and optimization of each flow path, enabling effective turbulence generation without requiring the entire intake system to be complex.
Solution Approach 2:
The separate duct acts as an intermediary element that introduces controlled fresh air pulses into the combustion chamber independently from the main intake system. This intermediary approach enables turbulence enhancement without integrating complexity into the core turbocharging system.
2Power
If fresh air is injected to increase turbulence, then power output increases, but air consumption increases
Solution Approach 1:
The system employs periodic fresh air pulses rather than continuous fresh air injection. The vortex tube generates intermittent pulses of cold fresh air that are introduced at optimal moments during the combustion cycle, achieving power enhancement while minimizing total air consumption compared to continuous injection.
Solution Approach 2:
The system changes the parameters of the air flow by using the vortex tube to create high-velocity, low-temperature pulses. This parameter transformation (from ambient air to cooled, high-velocity pulse) enables effective turbulence generation and power boost with reduced overall air consumption.
3Adaptability or versatility
If turbocharging system is integrated with turbulence system, then operating range is expanded, but pressure condition compatibility becomes problematic
Solution Approach 1:
The air supply system is segmented into the turbocharged main intake flow and the separate fresh gas pulse duct. This segmentation allows the turbulence generation function to operate independently of the turbocharger's pressure conditions, enabling compatibility across different operating ranges including turbocharged and naturally aspirated modes.
Solution Approach 2:
The separate duct with vortex tube serves multiple functions: it generates turbulence, provides cold air for charge cooling, and operates effectively across different pressure conditions. This multi-functionality enables the system to expand operating range while maintaining reliability across various pressure conditions.
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
This design enhances turbulence and power output by controlling the intensity of the fresh gas pulse and cooling the air, eliminating previous disadvantages of complex apparatus and inefficient turbulence generation, thereby increasing the engine's efficiency and power across a larger operating range.
Implementation Method 1
The fresh gas opens into the fresh air section via a nozzle, which has flow according to Bernoulli, Venturi or Coanda
Implementation Method 2
The fresh gas opens into the fresh air section via a nozzle, which has flow according to Bernoulli, Venturi or Coanda
Implementation Method 3
The fresh gas opens into the fresh air section via a nozzle, which has flow according to Bernoulli, Venturi or Coanda
Implementation Method 4
a separate duct with a vortex tube to induce a directional fresh gas pulse, allowing control over charge movement and power boost through air cooling
Data Source
AI summary
A combustion engine has at least one cylinder with a gas exchange inlet valve and a gas exchange outlet valve. A fuel injection device injects fuel directly into the cylinder. A fresh air section can be connected intermittently for fresh gas transmission to the cylinder via the gas exchange inlet valve. An exhaust section can be connected intermittently for exhaust gas transmission to the cylinder via the gas exchange outlet valve. A throttle element is provided in the fresh air section ahead of the gas exchange inlet valve in the direction of flow of a fresh air. A fresh gas line is provided, which opens into the fresh air section after the throttle element, in the region of the at least one gas exchange inlet valve. The fresh gas line opens into the fresh air section via a nozzle, which has flow according to Bernoulli, Venturi or Coanda.