HCCI Combustion Control by Intake and Exhaust Continuous Variable Valve Timing Mechanism in Premixed Gasoline Engine

2004 ◽  
Author(s):  
Masaru Ogura ◽  
Tomiyuki Sasaki ◽  
Yoichi Kawaguchi
Keyword(s):  
Gasoline Engine ◽  
Continuous Variable ◽  
Variable Valve Timing ◽  
Combustion Control ◽  
Valve Timing ◽  
Timing Mechanism ◽  
Hcci Combustion ◽  
Variable Valve

Development of a Lean Burn Engine with a Variable Valve Timing Mechanism

1996 ◽  
Author(s):  
Masato Matsuki ◽  
Kenji Nakano ◽  
Tohru Amemiya ◽  
Yuichiro Tanabe ◽  
Daisuke Shimizu ◽  
...  
Keyword(s):  
Variable Valve Timing ◽  
Valve Timing ◽  
Lean Burn ◽  
Timing Mechanism ◽  
Variable Valve

0714 Development of Hydraulic Variable Valve Timing System : The 4th Report: Applications to Combustion Control of PCCI Engine

2007 ◽  
Vol 2007.3 (0) ◽  
pp. 189-190
Author(s):  
Masanori ATARASHI ◽  
Masaru MIYASHITA ◽  
Naoki TOBIITA ◽  
Mitsuru KONNO ◽  
Zhili CHEN
Keyword(s):  
Variable Valve Timing ◽  
Combustion Control ◽  
Valve Timing ◽  
Timing System ◽  
Variable Valve

The variable valve timing mechanism for the Rover K16 engine Part 1: Selection of the mechanism and the basis of the design

2000 ◽  
Vol 214 (2) ◽  
pp. 197-205 ◽  
Author(s):  
P. H. Parker
Keyword(s):  
Feasibility Study ◽  
Development Work ◽  
Variable Valve Timing ◽  
Valve Timing ◽  
Timing Mechanism ◽  
Automotive Engines ◽  
Engine Part ◽  
Variable Valve ◽  
Selection Of

Variable valve timing has become an important feature of automotive engines as part of the search for a better compromise between performance, economy and emissions. This paper describes the Rover VVC system and has been written in two parts. The first part covers the initial feasibility study, the selection of the mechanism and the unique features evolved to suit the K16 engine. The second part covers the detailed mechanical layout, the development work undertaken and the performance obtained.

scholarly journals FEASIBILITY OF BACKFIRE CONTROL AND PERFORMANCE USING CHANGES OF VALVE OVERLAP PERIOD FOR A HYDROGEN-FUELED ENGINE WITH EXTERNAL MIXTURE

2009 ◽  
Vol 12 (14) ◽  
pp. 77-85
Author(s):  
Cong Thanh Huynh ◽  
Kang Joon-Kyoung ◽  
Noh Ki-Cholo ◽  
Lee Jong-Tai ◽  
Mai Xuan Pham
Keyword(s):  
High Efficiency ◽  
Engine Performance ◽  
Continuous Variable ◽  
Variable Valve Timing ◽  
Valve Timing ◽  
Performance Loss ◽  
Wide Range ◽  
And Performance ◽  
Variable Valve ◽  
Valve Overlap

The development of a hydrogen-fueled engine using an external mixture (e.g., using port injection) with high efficiency and high power is dependent on the control of backfire. This work has developed a method to control backfire by reducing the valve overlap period. For this goal, a single-cylinder hydrogen-fueled research engine with a mechanical continuous variable valve timing (MCVVT) system was developed. This facility provides a wide range of valve overlap periods that can be continuously and independently varied during firing operation. In experiments, the behavior of backfire occurrence and engine performance are determined as functions of the valve overlap period for fuel-air equivalence ratios between 0.25 and 1.2. The results showed that the research engine with the MCVVT system has similar performance to a conventional engine, and is especially effective in controlling the valve overlap period. The obtained results demonstrate that decreasing the valve overlap period may be one of the methods for controlling backfire in a H engine. Also, a method for compensating performance loss due to shortened valve overlap period is recommended.

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