Port Cylinder Deactivation Technology

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Invention Description:

The assembly for turning off one or more cylinders of an engine to alleviate load from a crankshaft, as presented in this patent, introduces a groundbreaking approach to cylinder deactivation technology. This innovation offers significant advantages over conventional CDA methods, providing enhanced efficiency, cost-effectiveness, and ease of implementation in existing engine architectures.

Background and Objectives:

Cylinder deactivation technology has long been pursued to enhance engine efficiency and fuel economy. However, traditional approaches involve complex modifications to engine components, resulting in increased production costs, maintenance challenges, and limited applicability. The primary objectives of this invention are to address these limitations by introducing a simpler, more cost-effective, and highly efficient cylinder deactivation system.

Key Features and Operation:

The assembly comprises one or more butterfly valves housed within the intake manifolds of the engine's cylinders. These butterfly valves are strategically designed with holes positioned to mitigate negative pressure effects. An actuator system is integrated to control the operation of these valves, allowing for precise cylinder deactivation as per operational requirements.

Advantages and Applications:

The invention offers several notable advantages:

Cost-Effectiveness: By utilizing butterfly valves and streamlined actuation mechanisms, the assembly significantly reduces production costs compared to traditional cylinder deactivation systems.

Ease of Implementation: The design facilitates easy integration into existing petrol or diesel engines, minimizing the need for extensive modifications and simplifying retrofitting processes.

Improved Efficiency: The strategic placement of butterfly valves and optimized actuation enable efficient cylinder deactivation, reducing load on the crankshaft and enhancing overall engine performance.

Versatility: The assembly's design versatility allows for application across various engine types, including passenger cars, commercial vehicles, and industrial engines.

Potential Impact and Future Prospects:

The invention holds immense promise for the automotive industry, offering a transformative solution to enhance fuel efficiency, reduce emissions, and optimize engine performance. With its patent approval and demonstrated efficacy, the assembly is poised to revolutionize cylinder deactivation technology, garnering interest from vehicle manufacturers, researchers, and environmental advocates.


The assembly for cylinder deactivation presented in this patent represents a significant advancement in engine efficiency and environmental sustainability. Its innovative design, cost-effectiveness, and ease of implementation position it as a leading solution for enhancing fuel economy and reducing emissions across various automotive sectors. As the industry continues to prioritize eco-friendly technologies, this invention stands out as a pivotal contribution towards achieving these goals.

WIPO publication- https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2023223116&_cid=P21-LQAKMM-69187-1 />Google bublication-https://patents.google.com/patent/WO2023223116A1/en?oq=WO2023223116A1



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  • Name:
    Samar Choudhury
  • Type of entry:
    Team members:
    • Samar Choudhury
    • Satarupa Kabasi
  • Profession:
  • Number of times previously entering contest:
  • Samar's hobbies and activities:
    Exploring new thing and solving mystery.
  • Samar is inspired by:
    To identify a genuine problem.