In scooter/motorbike engines coherent and stable tumble motion generation is still
considered an effective mean in order to both reduce engine emissions and promote higher …

Both in the automotive and in the motorcycle fields the requirement of step-by-step
improvements for optimizing the engine cycle is still present. In particular the focus of the …

The impact of gasoline engines on improving fuel consumption and reducing emissions has
received increasing attention around the world, and emissions regulations have become …

In order to minimize the short-circuiting of the intake charge in a poppet-valved two-stroke
engine, a “step structure” on the intake side of the pent-roof was employed to shroud the …

During the last years the deep re-examination of the engine design for lowering engine
emissions involved two-wheel vehicles too. The IC engine overall efficiency plays a …

In-cylinder flow characteristics, which are mainly determined by the intake ports, have a
decisive influence on the mixture formation and combustion process of internal combustion …

Preparation of air-fuel mixture and its stratification, plays the key role to determine the
combustion and emission characteristics in a gasoline direct injection (GDI) engine working …

The two-stroke operation is one of the most effective approaches to significantly increase the
torque and power of a 4-stroke engine without the necessary requirement of intensifying the …

To study the effects of intake port structure parameters (inlet area and throat area) of a
gasoline direct injection engine on mixture formation, a steady-flow test and transient …

Faster combustion and lower cycle-to-cycle variability are mandatory tasks for naturally
aspirated engines to reduce emission levels and to increase engine efficiency. The …