Abstract: A refrigerator having an enclosed compartment for storing food to be cooled, an evaporator including a refrigerant flowing therethrough for cooling the food in the compartment, a defrosting device, and a defrost override device. The defrosting device periodically heats the evaporator for removing the accumulated frost for controlled periods. The defrost override device automatically deactivates the defrosting device when the heating of the evaporator continues for longer than a preset time. The defrost override device may also automatically activate the refrigerant flowing through the evaporator. In this manner the refrigerator of this invention can store food without overheating during the defrosting operation.

Abstract: A number of embodiments of induction systems for internal combustion engines having plural combustion chambers with each being served by an intake passage having a respective throttle valve. First and second plenum chambers communicate with the intake passage through relatively long and relatively short conduits for improving low and high speed running. A pressure regulating chamber is also provided. This communicates with all of the intake passages between the throttle valve and the combustion chamber. A first control valve is provided in each of the communicating passageways for controlling the communication of the pressure regulating chamber with the intake passage. A second conduit interconnects the pressure regulating chamber only with one of the intake passages upstream of the throttle valve and a second control valve controls the flow through this conduit. Various control strategies and geometric relationships are disclosed.

Abstract: A temperature detector including a temperature sensor to generate an analog voltage corresponding to a temperature detected thereby. The temperature detector is provided with an A/D conversion device to generate digital temperature data corresponding to the analog voltage input thereto, a reference voltage range setting device to set the reference voltage range to the A/D conversion device, and a reference voltage range changing device. The A/D conversion device compares the analog voltage with the reference voltage which varies within the set reference voltage range. The reference voltage range is automatically changed by the reference voltage range changing device not only to obtain a desired resolution of temperature in a normal operating mode, but also to detect a malfunction of the temperature sensor in a malfunction detection mode.

Abstract: Two embodiments of valve driving arrangements for internal combustion engines that permit a low camshaft positioning without adding to the width of the engine. In each embodiment, three intake valves are slidably supported, two in a common plane and the third in a plane that intersects the first plane along a line that is disposed farther from the valve heads than the rotational axis of the camshaft which operates the valves.

Abstract: A valve actuating arrangement for a multiple valve engine wherein the valves are positioned so that they have their heads lying at different distances from the axis of rotation of the actuating camshaft. The valve stems are kept at the same length by employing cam lobes for actuating those that have different base circles.