18325522. ROLLER PIN DECOUPLING TYPE CDA SYSTEM simplified abstract (KIA CORPORATION)

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ROLLER PIN DECOUPLING TYPE CDA SYSTEM

Organization Name

KIA CORPORATION

Inventor(s)

SEUNG-WOO Shin of Hwaseong-si (KR)

ROLLER PIN DECOUPLING TYPE CDA SYSTEM - A simplified explanation of the abstract

This abstract first appeared for US patent application 18325522 titled 'ROLLER PIN DECOUPLING TYPE CDA SYSTEM

Simplified Explanation

The roller pin decoupling type cylinder deactivation (CDA) system described in the patent application allows for improved engine operation efficiency by controlling the roller pin through an actuation valve operated by hydraulic pressure. Here are some key points to note:

  • The system includes a roller rocker arm, rocker shaft, camshaft, and actuation valve.
  • When oil is not supplied to the rocker shaft sub passage and hydraulic pressure is released from the actuation valve, the roller and pin are not restrained, leading to CDA.
  • The roller can switch between a non-rotating and rotating state based on the CDA operation.
  • The actuation valve provides control over the system mechanism, enhancing operation efficiency for different engine conditions.

Potential Applications

The technology can be applied in automotive engines to improve fuel efficiency and performance by deactivating cylinders when not needed.

Problems Solved

This innovation addresses the challenge of optimizing engine operation under varying conditions, leading to enhanced efficiency and performance.

Benefits

- Improved fuel efficiency - Enhanced engine performance - Flexible control over cylinder deactivation

Potential Commercial Applications

The technology can be utilized by automotive manufacturers to develop more efficient and environmentally friendly engines, appealing to consumers looking for fuel-efficient vehicles.

Possible Prior Art

Prior art in the field of engine cylinder deactivation systems may include similar technologies used in automotive engines to improve fuel efficiency and reduce emissions.

Unanswered Questions

How does the system handle variations in hydraulic pressure for optimal performance?

The patent application does not provide detailed information on how the system adjusts to different levels of hydraulic pressure to ensure efficient operation.

What are the potential maintenance requirements for this system in terms of longevity and reliability?

The article does not address the maintenance needs or long-term reliability of the roller pin decoupling type CDA system, leaving questions about its durability and upkeep.


Original Abstract Submitted

A roller pin decoupling type cylinder deactivation (CDA) system includes a roller rocker arm, rocker shaft, a camshaft, and an actuation valve. When oil is not supplied to a rocker shaft sub passage of the rocker shaft and a hydraulic pressure is released from the actuation valve, the roller and the pin are not restrained so that the CDA is generated. Thus, the roller is switched to a non-rotating state and a rotating state according to non-operation and operation of the CDA. In particular, a degree of freedom of control over a system mechanism is imparted due to restriction control of the roller pin through the actuation valve which is operated by a hydraulic pressure, which makes it possible to improve operation efficiency for each engine operating condition.