Intake manifold communication valve

An air intake system for a multi-cylinder combustion engine, comprising:

• a left side plenum and a right side plenum, each of said left side plenum and said right side plenums connected to a plurality of air intake passages for passing air to a plurality of engine cylinders;
• a communication valve for connecting said left side plenum with said right side plenum;
• a short balance plenum connected between said communication valve and at least one of said left side plenum and said right side plenum;
• a long balance plenum connected between said communication valve and at least one of said left side plenum and said right side plenum;
• and
• wherein said communication valve includes a valve body having an axis and a sealing section rotatable through 360 degrees around the valve body axis and disposed for selectively closing air flow from said short balance plenum and said long balance plenum.

An air intake system for a multi-cylinder combustion engine, comprising:

• a left side plenum and a right side plenum, each of said left side plenum and said right side plenums connected to a plurality of air intake passages for passing air to a plurality of engine cylinders;
• a communication valve for connecting said left side plenum with said right side plenum;
• a short balance plenum connected between said communication valve and at least one of said left side plenum and said right side plenum;
• a long balance plenum connected between said communication valve and at least one of said left side plenum and said right side plenum;
• and
• wherein said communication valve includes a valve body having an axis and a sealing section rotatable through 360 degrees around the valve body axis and disposed for selectively closing air flow from said short balance plenum and said long balance plenum, said communication valve is disposed at an intersecting location of said short balance plenum, said long balance plenum and at least one of said right side plenum and said left side plenum, and said communication valve includes a sealing section that is movable between at least four distinct positions.