An alternative approach to a camless SI engine with a fully variable valve train is a topology where the intake side of the valve train is equipped with electromagnetic actuators and the exhaust side ....
Engine designers have been investigating the potential of valve actuation mechanisms leading to the development of camless engines for many years [Ref. 1, 2, 3, 4 and 5]. There have been a number of o....
1-D analysis methods are used to simulate the performance of a pneumatic valve actuation system for an internal combustion engine. Pneumatics provides an attractive alternative to the more-common hydr....
A continuously variable lift, duration and phase mechanical lift mechanism is described, as applied to the intake valvetrain of a SOHC, 4-valve per cylinder, four-cylinder production engine. Improveme....
The mechanical fully variable valve lift system UniValve represents one of the new technical solutions for a throttle free load control for combustion engines. The load control is achieved by the vari....
So as to fulfill the future requirements regarding fuel consumption and exhaust gas emissions, new technologies have to be adopted in future generations of spark ignition engines. The mechanical fully....
In a future ‘hybrid’ mode internal combustion engine capable of running in spark ignition (SI) and controlled auto ignition-CAI (also known as Homogeneous Charge Compression Ignition-HCCI) modes, tran....
A Comprehensive computer simulation model was developed for a single cylinder spark ignition engine to simulate the Compression, Combustion, Expansion, Exhaust and Intake processes including the heat ....
BorgWarner has developed a continuously variable vane style VCT camshaft phaser that, differing from the oil pressure actuated phasers in production, utilizes camshaft torque energy, not oil pump flow....
It is a well established fact that variable camshaft phasing can be used to reduce engine out emissions during steady state operation. However, a transition in camshaft timing which often accompanies ....
Controlled Auto Ignition (CAI) as a promising future combustion process is a concept to strongly reduce fuel consumption as well as NOx emissions. The acceptance and the potential of this combustion p....
New cylinder impulse charge systems permit higher torque at low speed and promise substantial downsizing potential ongoing with reduced fuel consumption and lower emissions. Their immediate response a....
This paper describes the results of the first stage of an integrated experimental and modelling programme on a gasoline engine with Twin Mechanical Variable Lift (TMVL) capability. The engine used for....
