When the Pistons in the summer, temperatures rise, thus causing low pressure Pistons are moved and when I get the heat until the temperature on the. The pressure will be reduced.
As the piston hot side temperature is increased. This causes pressure piston is moving. When heated until the temperature constant. Pressure is reduced
When the piston of the hot temperature increase. Thus, causing the piston pressure on the move. And when be heated until the temperature stability, pressure will decrease .