An engine having a control system that executes a control strategy for limiting engine fueling upon deactivation of an engine retarder. The assembly includes a weld wheel rotatably mounted on an axle which is moveable toward and away from the membranes, and pressure exerting structure mounted on the machine and operable to bias the axle toward the membranes during operation of the machine. The power control unit for a high-frequency dielectric heating has an input current detection section 71, 72 for detecting input current of an inverter 10 for rectifying 31 an AC power supply voltage 20, performing high-frequency switching of the voltage, and converting the voltage to high-frequency power. Similarly, the transmission ratio can also be reduced by causing the input pumps to pump fluid into the accumulator at the same time they are pumping fluid through the output motors. In addition, such a projection system often provides a higher-quality image than a conventional image projection system. The attributes can be determined independently of the user or can be set directly by the user.