Cam Profile Switching (CPS) and Phasing Strategy vs Fully Variable Valve Train (FVVT) Strategy for Transitions between Spark Ignition and Controlled Auto Ignition Modes

2005 ◽  
Author(s):  
Nebojsa Milovanovic ◽  
Blundell Dave ◽  
Stephen Gedge ◽  
Jamie Turner
Keyword(s):  
Spark Ignition ◽  
Valve Train ◽  
Auto Ignition ◽  
Variable Valve Train ◽  
Cam Profile ◽  
Variable Valve

Perspectives of the fully variable valve train univalve on the basis of a 2.0 l spark-ignition engine

MTZ worldwide ◽  
2006 ◽  
Vol 67 (7-8) ◽  
pp. 25-28
Author(s):  
Rudolf Flierl ◽  
Daniel Gollasch ◽  
Andreas Knecht ◽  
Dirk Pohl ◽  
Wilhelm Hannibal
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Valve Train ◽  
Variable Valve Train ◽  
Variable Valve

Cylinder Deactivation with Mechanically Fully Variable Valve Train

2012 ◽  
Vol 5 (2) ◽  
pp. 207-215 ◽  
Author(s):  
Rudolf Flierl ◽  
Frederic Lauer ◽  
Michael Breuer ◽  
Wilhelm Hannibal
Keyword(s):  
Valve Train ◽  
Cylinder Deactivation ◽  
Variable Valve Train ◽  
Variable Valve

Variable Valve Train Concept for Compliance with Future Diesel Emission Standards

MTZ worldwide ◽  
2021 ◽  
Vol 82 (2) ◽  
pp. 36-41
Author(s):  
Michael Elicker ◽  
Wolfgang Christgen ◽  
Jahaazeb Kiyanni ◽  
Maximilian Brauer
Keyword(s):  
Valve Train ◽  
Emission Standards ◽  
Variable Valve Train ◽  
Diesel Emission ◽  
Variable Valve

3- Cylinder SI Engine with fully variable Valve Train – UpValve on Intake and Exhaust Side

2017 ◽  
pp. 27-44
Author(s):  
M. Breuer ◽  
G. Bartsch ◽  
R. Friedfeldt ◽  
U. Heiter ◽  
U. Kramer ◽  
...  
Keyword(s):  
Valve Train ◽  
Si Engine ◽  
Variable Valve Train ◽  
Variable Valve

Frictional Performance of the fully variable Valve Train UpValve

2019 ◽  
pp. 45-62
Author(s):  
M. Breuer ◽  
D. Furtado ◽  
K. Grimm ◽  
S. Moormann ◽  
S. Schmitt ◽  
...  
Keyword(s):  
Valve Train ◽  
Frictional Performance ◽  
Variable Valve Train ◽  
Variable Valve

scholarly journals Investigation of transition between spark ignition and controlled auto-ignition combustion in a V6 direct-injection engine with cam profile switching

2008 ◽  
Vol 222 (10) ◽  
pp. 1911-1926 ◽  
Author(s):  
N Kalian ◽  
H Zhao ◽  
J Qiao
Keyword(s):  
Gasoline Engine ◽  
Fuel Injection ◽  
Direct Injection ◽  
Spark Ignition ◽  
High Lift ◽  
Auto Ignition ◽  
Operating Region ◽  
Low Load ◽  
Cam Profile ◽  
Direct Fuel Injection

Controlled auto-ignition (CAI) combustion, also known as homogeneous charge compression ignition (HCCI), can be achieved by trapping residuals with early exhaust valve closure in a direct-fuel-injection in-cylinder four-stroke gasoline engine (through the employment of low-lift cam profiles). Because the operating region is limited to low-load and midload operation for CAI combustion with a low-lift cam profile, it is important to be able to operate spark ignition (SI) combustion at high loads with a normal cam profile. A 3.0l prototype engine was modified to achieve CAI combustion, using a cam profile switching mechanism that has the capability to switch between high- and low-lift cam profiles. A strategy was used where a high-lift profile could be used for SI combustion and a low-lift profile was used for CAI combustion. Initial analysis showed that for a transition from SI to CAI combustion, misfire occurred in the first CAI transitional cycle. Subsequent experiments showed that the throttle opening position and switching time could be controlled to avoid misfire. Further work investigated transitions at different loads and from CAI to SI combustion.

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