Solenoid, Multiple Displacement: Operation

Cylinder Deactivation 

• Trap an exhaust charge from a normal combustion event
• Normal combustion event
• Deactivate the exhaust valve
• Deactivate the intake valve
• Piston is an air spring
• Cylinders deactivated in firing sequence

Cylinder Reactivation 

• Normal combustion event
• Activate the exhaust valve
• Activate the intake valve
• Empty the cylinder
• Cylinders reactivated in firing sequence