Development of a Hydraulic Variable Valve Timing Control System with an Optimum Angular Position Locking Mechanism

2012 ◽  
Author(s):  
Takahiro Miura ◽  
Shunichi Aoyama ◽  
Kaoru Onogawa ◽  
Takaya Fujia ◽  
Tetsuro Murata ◽  
...  
Keyword(s):  
Control System ◽  
Angular Position ◽  
Variable Valve Timing ◽  
Valve Timing ◽  
Timing Control ◽  
Locking Mechanism ◽  
Variable Valve

Development of the Multi Locking Hydraulic Variable Valve Timing Control System(VTC) for Hybrid Engines

2014 ◽  
Vol 7 (3) ◽  
pp. 1532-1538
Author(s):  
Ken Shiozawa ◽  
Kenji Ariga ◽  
Tetsuro Murata ◽  
Hironori Ito ◽  
Hitoshi Takeuchi ◽  
...  
Keyword(s):  
Control System ◽  
Variable Valve Timing ◽  
Valve Timing ◽  
Timing Control ◽  
Hybrid Engines ◽  
Variable Valve

KINEMATICS OF THE DISTRIBUTION MECHANISM OF THE HYUNDAI ENGINE WITH ADJUSTABLE VALVE OPERATING TIME

2021 ◽  
Vol 3 (144) ◽  
pp. 32-39
Author(s):  
Aleksey G. Ivanov ◽  
◽  
Nikolay G. Kasimov ◽  
Aleksandr V. Kostin ◽  
Renat R. Shakirov ◽  
...  
Keyword(s):  
Control System ◽  
Kinematic Analysis ◽  
Operating Time ◽  
Operating Conditions ◽  
Research Purpose ◽  
Valve Timing ◽  
Gas Distribution ◽  
Timing Control ◽  
Adjustable Valve ◽  
Variable Valve

Increasing the efficiency of modern internal combustion engines is going in the direction of optimizing the gas distribution phases in order to adjust them to the operating conditions of motor vehicles. Hyundai has announced the development of the first production engine with continuously variable valve operation time – Continuously Variable Valve Duration. (Research purpose) The research purpose is in conducting a kinematic analysis of the gas distribution mechanism with an adjustable valve operating time, identifying the theoretical possibilities of this mechanism in comparison with the information provided in the prospects. (Materials and methods) The methods of kinematic analysis of lever mechanisms were used in the work. (Results and discussion) The analysis of the design of the gas distribution mechanism with an adjustable valve operating time made it possible to choose a suitable structural scheme that is equivalent to the original mechanism. The article presents the most effective method of kinematic analysis of this mechanism and developed on its basis a program for calculating the angles of rotation of the cam and the shaft of the gas distribution mechanism. (Conclusions) An engine with a valve operating time control system allows you to more effectively adjust the cylinder filling depending on the operating conditions due to the variable phase of rotation of the camshaft. The valve timing control system offered by Hyundai should only work with the valve timing control mechanism, since when the cam rotation speed changes, it starts working in the wrong phase that should be at a given time. With a slow rotation of the cam, it lags behind in phase from the shaft of the gas distribution mechanism, and with a fast rotation of the cam, on the contrary, the phase advance of the shaft of the gas distribution mechanism occurs.

Analysis of the Variable Intake Control Technology on the Car

2014 ◽  
Vol 556-562 ◽  
pp. 2523-2527
Author(s):  
Yan Liu
Keyword(s):  
Engine Performance ◽  
Variable Valve Timing ◽  
Control Technology ◽  
Valve Timing ◽  
Timing Control ◽  
Control Technologies ◽  
Boost Control ◽  
Variable Valve ◽  
Valve Control ◽  
Intake Control

In recent years, major car companies research and use a variety of advanced intake control technologies, the most commonly used techniques are the power valve control technology, harmonic boost control technology, variable valve timing control technology. After the actual using, these techniques can really improve the volumetric efficiency of the engine, improve engine performance.

Preliminary Results on Optimal Variable Valve Timing and Spark Timing Control via Extremum Seeking

2010 ◽  
Vol 43 (18) ◽  
pp. 377-384 ◽  
Author(s):  
Donghoon Lee ◽  
Li Jiang ◽  
Hakan Yilmaz ◽  
Anna G. Stefanopoulou
Keyword(s):  
Extremum Seeking ◽  
Variable Valve Timing ◽  
Valve Timing ◽  
Timing Control ◽  
Preliminary Results ◽  
Spark Timing ◽  
Variable Valve
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