An Approach for Modeling the Effects of Gas Exchange Processes on HCCI Combustion and Its Application in Evaluating Variable Valve Timing Control Strategies

2002 ◽  
Author(s):  
Aristotelis Babajimopoulos ◽  
Dennis N. Assanis ◽  
Scott B. Fiveland
Keyword(s):  
Gas Exchange ◽  
Control Strategies ◽  
Variable Valve Timing ◽  
Valve Timing ◽  
Timing Control ◽  
Hcci Combustion ◽  
Exchange Processes ◽  
Variable Valve

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

Development of the energy accumulated type variable valve timing system for HCCI combustion control

2004 ◽  
Vol 2004 (0) ◽  
pp. 183-184
Author(s):  
Youichi Sugihara ◽  
Masanori Atarashi ◽  
Mitsuru Konno ◽  
Zhili Chen
Keyword(s):  
Variable Valve Timing ◽  
Combustion Control ◽  
Valve Timing ◽  
Hcci Combustion ◽  
Timing System ◽  
Type Variable ◽  
Variable Valve

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.

Modeling and Control of an Electric Variable Valve Timing System

2013 ◽  
Vol 136 (2) ◽  
Author(s):  
Zhen Ren ◽  
Guoming G. Zhu
Keyword(s):  
Closed Loop ◽  
Control Strategies ◽  
Planetary Gear ◽  
Fast Response ◽  
Bench Test ◽  
Closed Loop Control ◽  
Variable Valve Timing ◽  
Valve Timing ◽  
Loop Control ◽  
Variable Valve

This paper presents a model of an electric variable valve timing (EVVT) system and its closed-loop control design with experimental validation. The studied EVVT uses a planetary gear system to control the engine cam timing. The main motivation of utilizing the EVVT system is its fast response time and the accurate timing control capability. This is critical for the combustion mode transition control between the spark ignition (SI) and homogeneous charge compression ignition (HCCI) combustion, where the engine cam timing needs to follow a desired trajectory to accurately control the engine charge and recompression process. A physics-based model was developed to study the characteristics of the EVVT system, and a control oriented EVVT model, with the same structure as the physics-based one, was obtained using closed-loop system identification. The closed-loop control strategies were developed to control the EVVT to follow a desired trajectory. Both simulation and bench test results are included.

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