Abstract: A two-cycle internal combustion engine configuration and control strategy in which the unburned hydrocarbon emissions are measured in the exhaust manifold during the scavenging process using a fast response air fuel sensor. The signal from the sensor is used to control the operation of a low pressure ratio blower and the inlet fuel and oil flow. In this way the inlet flow of fuel and air may be reduced which controls the short circuiting loss of fuel during the scavenging process and reduces unburned hydrocarbons in the exhaust gas.

Abstract: A new two-cycle internal combustion engine configuration and control strategy in which the unburned hydrocarbon emissions are measured in the exhaust manifold during the scavenging process using a fast response air fuel sensor. The signal from the sensor is used to control the operation of a low pressure ratio blower and the inlet fuel and oil flow. In this way the inlet flow of fuel and air may be reduced which controls the short circuiting loss of fuel during the scavenging process and reduces unburned hydrocarbons in the exhaust gas.

Abstract: A two-cycle internal combustion engine configuration and control strategy in which the unburned hydrocarbon emissions in the exhaust gas are measured by a sensor in the exhaust manifold. The information from the sensor is used to control the outflow of air from a blower mixed with the fuel to vary the total volume of fuel and air to thus reduce unburned hydrocarbons in the exhaust gas.

Abstract: An apparatus operable in cooperation with a bed having a top surface and opposite head and foot ends for applying traction to a patient's lower back, including a lower sheet extending from the head end lengthwise to the foot end, said sheet including excess length at the head end of said bed, pulling means for pulling said lower sheet lengthwise toward the foot end of said bed, and an upper sheet having one end fixedly attached to said head end of said bed and extending lengthwise about halfway to said foot end, said upper sheet positioned above and lying on said lower sheet said pulling means adapted to periodically pull said lower sheet lengthwise in the foot end direction a predetermined distance, wherein movement of the lower sheet with the patient's buttocks and legs lying thereon effects a frictional pull in the foot end direction on said buttocks and legs, and wherein the weight of the patient's upper body on the fixed upper sheet effects a frictional resistance in the opposite direction on the patient