Abstract: Disclosed herein is an image processing apparatus for determining the rate of UCR (under color removal) for each color by a function of each of color signals. The image processing apparatus basically comprises a device for determining the maximum value Max and the minimum value Min of each of input signals Yi, Mi and Ci, and a device for determining the rates of UCR indicative of Y.sub.U, M.sub.U and C.sub.U from the input signals Yi, Mi, Ci and the maximum value Max and the minimum value Min, using respective functions F.sub.Y, F.sub.M and F.sub.C. The above-described Y.sub.U, M.sub.U and C.sub.U can be determined in accordance with the following equations:Y.sub.U =F.sub.Y (Max, Min, Yi)M.sub.U =F.sub.M (Max, Min, Mi)C.sub.U =F.sub.C (Max, Min, Ci).

Abstract: Constant differential pressure valves, one for each cylinder of the engine, supply liquid fuel to the injection nozzles. The liquid fuel supplied to the valves is delivered from a chamber within a metering member mounted to turn within the bore of a stationary sleeve. A plate carried by the metering member has notches on its periphery which cooperate with openings in the enclosing sleeve to form variable orifices. The metering member is turned in proportion to the rate of air flow through an air intake passage for the engine.

Abstract: Disclosed herein is a liner for an exhaust port system of an internal combustion engine for reducing heat loss from the exhaust gas to facilitate combustion of unburned hydrocarbons (HC) and oxidation of unburned carbon monoxide (CO). The exhaust port liner is rigidly secured at one end thereof to the exhaust port and is supported at its other end by means of a peripheral sealing ring to provide an airtight liner which is free sliding at said other end to accommodate expansion and contraction of the exhaust port liner by the exhaust gas passing therethrough.