Abstract: The present invention relates to a honeycomb structure having promoter particles and a binder phase interposed between the promoter particles, and a method for manufacturing the same. The promoter particles contain at least first promoter particles made of a ceria-zirconia solid solution. The binder phase, in each of which a number of inorganic binder particles are aggregated with each other, with ?-alumina being a main component, contain one or two of Fe and Cr dissolved in ?-alumina. The honeycomb structure has a specific surface area at a ratio of 90% or more of after heating to before heating at a temperature of 1200° C.

Abstract: The present invention relates to a honeycomb structure having promoter particles and a binder phase interposed between the promoter particles, and a method for manufacturing the same. The promoter particles contain at least first promoter particles made of a ceria-zirconia solid solution. The binder phase, in each of which a number of inorganic binder particles are aggregated with each other, with ?-alumina being a main component, contain one or two of Fe and Cr dissolved in ?-alumina. The honeycomb structure has a specific surface area at a ratio of 90% or more of after heating to before heating at a temperature of 1200° C.

Abstract: In control apparatus for an internal combustion engine which includes a plurality of sensors for detecting parameters representing operation state of the engine to thereby output respective sensor signals, a crank angle sensor for generating a reference period signal in synchronism with rotation of the engine, a fuel injector for injecting fuel in the engine and an air-fuel ratio controller for determining a driving time of the fuel injector on the basis of one of the sensor signals and the reference period signal includes a filter for filtering the one sensor signal, a decision means for making decision as to normality or abnormality of the one sensor signal, and a means responsive to the decision of abnormality of the one sensor signal for thereby determining the driving time on the basis of another sensor signal and a means responsive to restoration of the one sensor signal to the normal state to thereby enable the determination of the injector driving time based on the one sensor signal to be resumed only

Abstract: An idle revolution control device includes a water temperature sensor, a filter means and a control means which is constituted with a central processing unit and an interface connecting the water temperature sensor and the central processing unit. The filter means functions to provide a time constant which provide a high response speed for a temperature variation toward a high temperature side and a low response speed for a temperature variation toward a low temperature side and to pass an output signal of the water temperature sensor with such time constant a predetermined time after an engine starts.

Abstract: A knock suppression system for an internal combustion engine in which the occurrence of knocks is suppressed by quickly providing a corresponding control signal previously stored in a memory and determined on the basis of operating conditions of the engine so that knocks can be effectively suppressed. As the operating conditions vary due to change in ignition timing, A/F ratio, combustion chamber temperature, inlet air temperature, humidity, or the like, the control signal is corrected and updated to compensate for the change in knock level. Also, even at the transient state of the engine where the factors introducing knocks largely vary, a correction control signal corresponding to the variations during the transient operation can be carried out, thereby effectively and quickly suppressing engine knocks.

Abstract: A knocking control system for an I.C.E. includes a knock detector, and an apparatus for retarding the timing in response to the detection of knocking. This apparatus includes an arithmetic device and a memory map for storing retard values and accessed according to intake pressure (engine load) and r.p.m. values. The map value is read out by the arithmetic means is generally corrected on the basis of the present knock value, and the corrected retard value is used to control ignition and may be stored in the memory map to replace the read out value.

Abstract: A target for an image pick-up tube employs a layer of lead monoxide P b O which exhibits substantially intrinsic conductivity. The surface region of the P b O layer is formed with a high energy level density effective to trap beam electrons landing thereon, while remaining in the intrinsically conductive state, by bombardment of the target surface with inert gas ions. Such a surface region effectively precludes injection of electrons into the target interior, and gives rise to improved resolution and dark current characteristics.