Abstract: A hot-rolled steel strip having superior low temperature toughness and weldability, which is suitably used as a starting material for high strength electric resistance welding pipe, is provided at a low cost without constructing new production facilities and increasing cost. The hot-rolled steel strip is low carbon steel containing at least one of about 0.5.% or less of Cu, about 0.5% or less of Ni, and about 0.5% or less of Mo, wherein Pcm represented by the following equation (1) is 0.17 or less: Pcm=(% C)+(% Si)/30+((% Mn)+(% Cu))/20+(% Ni)/60+(% Mo)/7+(% V)/10??Equation (1), (where (% M) indicates the content of element M on a mass percent basis), and the balance includes Fe and incidental impurities. In addition, in the entire microstructure, the ratio of bainitic ferrite, which is a primary phase, is controlled to be about 95 percent by volume or more.

Abstract: A method and system that control delivery of start-up fuel to an engine, in one form includes clocking a first predetermined period of time. The method includes allowing start-up fuel to be supplied to the engine during at least some of the first predetermined period of time. The method also includes clocking a second predetermined period of time that comes after the first predetermined period of time. And the method includes not allowing start-up fuel to be supplied to the engine when the second predetermined period of time is clocking. In another form, the system includes a carburetor and a control unit.

Abstract: Provided are a mold apparatus for molding a hollow molded article and a method of molding the hollow molded article, in which a slide mold can be accurately positioned in at least three positions in which the slide mold is required to be positioned in a molding process for the hollow molded article. The mold apparatus for molding the hollow molded article includes a drive control mechanism for driving the at least one of the first mold and the second mold to be slid, which is a slide mold, and for controlling a position of the slide mold. In the mold apparatus, the drive control mechanism is structured such that the slide mold can be positioned in at least three positions in which the slide mold is required to be positioned when molding the hollow molded article.

Abstract: A mold apparatus for producing a hollow molded article, which can cope with a hot runner specification and facilitate operations for exchanging consumptions of a film formation apparatus or the like without difficulty for arranging a sprue, and a method for producing a hollow molded article. The mold apparatus includes a first molding part for molding a first divided body and a second molding part for molding a second divided body between a first mold and a second mold, and further includes a film formation part in addition to the molding parts, so as to mold a hollow molded article, wherein the film formation part, the first molding part and the second molding part are linearly arranged in this order.

Abstract: A failure diagnosis apparatus for a refrigerating cycle had a problem that it has a low precision because the fluid is treated, and it is difficult to detect a foretaste of failure, absorb individual differences of real machine in the failure determination, and determine a cause of failure. Also, no cheap and practical diagnosis apparatus and method are provided. A plurality of instrumentation amounts concerning the refrigerant such as the pressure and temperature of the refrigerating cycle apparatus or other instrumentation amounts are detected, the state quantities such as composite variables are acquired by making the arithmetic operation on these instrumentation amounts, and whether the apparatus is normal or abnormal is judged employing the arithmetic operation results.

Abstract: A method includes controlling supply of supplementary fuel through a supplementary fuel supply passage in a carburetor to an engine. Engine cranking is sensed, and the supply of the supplementary fuel is prevented when the engine cranking reaches a prescribed number of revolutions. Accordingly, an excessive amount of fuel is not supplied to the engine when the engine fails to start, so that flooding of an engine spark plug can be avoided and the possibility of successfully starting the engine by subsequent engine cranking is increased.

Abstract: A method and system for preventing excessive fuel supply during engine startup, including supplying supplementary fuel during cranking of a cold engine and preventing supply of the supplementary fuel if the engine fails to start running. A solenoid valve in a supplementary fuel supply passage permits the supply of supplementary fuel. A switching device controls the solenoid valve and is grounded by a thermistor that is placed adjacent to a heater element. During cranking, electric current is supplied to the heater element, which progressively increases in temperature to cause the electric resistance of the adjacent thermistor to decrease over a predetermined time, thereby causing the transistor to turn off and deactivate the solenoid valve. Thus, if the engine fails to start within the predetermined time, the supplementary fuel supply is cut off by the solenoid valve, thereby reducing the possibility of excessive fuel enrichment and engine flooding.

Abstract: A hot-rolled steel sheet for high-strength ERW pipes contains about 0.02% to about 0.06% C; about 0.05% to about 0.50% Si; about 0.5% to about 1.5% Mn; about 0.010% or less P; about 0.0010% or less S; about 0.01% to about 0.10% Al; about 0.01% to about 0.10% Nb; about 0.001% to about 0.025% Ti; about 0.001% to about 0.005% Ca; about 0.003% or less 0; and about 0.005% or less N, and at least one element selected from the group consisting of about 0.01% to about 0.10% V; about 0.01% to about 0.50% Cu; about 0.01% to about 0.50% Ni; and about 0.01% to about 0.50% Mo on the basis of mass. The group of C, Si, Mn, Cu, Ni, Mo, and V and the group of Ca, 0, and S satisfy specific relationships, and the microstructure of the steel sheet is composed of about 95% by volume or more bainitic ferrite.

Abstract: A method for manufacturing a steel sheet comprising rough-rolling a steel consisting essentially of 0.04 to 0.12 weight % C, 0.25 to 2 weight % Si, 0.5 to 2.5 weight % Mn, 0.1 weight % or less Al, and a balance of substantially Fe and inevitable impurities to form a sheet bar; finish-rolling the sheet bar at a rolling end temperature of the Ar3 transformation point or more; primary-cooling the finish-rolled steel sheet within 1 second after completing the finish-rolling at a cooling speed of higher than 200° C./sec through a cooling range where-the difference between the start temperature of the cooling and the end temperature of the cooling is 100° C. to below 250° C.; slowly cooling the primary-cooled steel at a cooling speed of 10° C./sec or less, for 2 seconds to less than 20 seconds, at a temperature of 580° C. to 720° C.; and coiling the slowly cooled steel sheet at a temperature of 400° C. to below 540° C.

Abstract: A method for manufacturing a steel sheet comprising continuously casting a steel containing 0.04 to 0.2 wt. % C, 0.25 to 2 wt. % Si, 0.5 to 2.5 wt. % Mn, and 0.1 wt. % or less Al to form a slab; hot-rolling by rough-rolling the slab to form a sheet bar and finish-rolling the sheet bar with a reduction in thickness at the final stand of less than 30%, the finish-rolling being completed at a temperature from the Ar3 transformation point to the Ar3 transformation point +60° C.; primary-cooling the hot-rolled steel sheet, the primary cooling being started within 1 second after the completion of hot-rolling and conducting the cooling at a cooling speed of higher than 200° C./sec down to a temperature of Ar3 −30° C. to the Ar1 transformation point; slow cooling or air-cooling the primary-cooled steel sheet at a temperature of the Ar3 transformation point to the Ar1 transformation point at 10° C.

Abstract: A hot-rolled steel strip having superior low temperature toughness and weldability, which is suitably used as a starting material for high strength electric resistance welding pipe, is provided at a low cost without constructing new production facilities and increasing cost. The hot-rolled steel strip is low carbon steel containing at least one of about 0.5.% or less of Cu, about 0.5% or less of Ni, and about 0.5% or less of Mo, wherein Pcm represented by the following equation (1) is 0.

Abstract: A stratified scavenging carburetor with a lost motion coupling permits limited relative movement of a throttle valve relative to an air valve so that initial opening of the throttle valve off idle does not open the air valve to avoid diluting with scavenging air the fuel and air mixture delivered to an engine. Rotation of the throttle valve beyond a predetermined amount from idle causes a corresponding opening of the air valve to provide scavenging air to the engine. Closing a choke valve engages a lock lever with the throttle valve to move the throttle valve off idle to a start position without opening the air valve. In another embodiment, closing the choke valve prevents the air valve from opening even if the throttle valve is moved beyond where the throttle valve would cause the air valve to open if the choke valve were open. Thus, a richer than normal fuel and air mixture can be supplied to the engine during a choke-assisted start and warm-up of the engine.

Abstract: The present invention relates to a high strength hot rolled steel sheet containing 0.15% or less C, 0.02 to 0.35% Ti, and 0.05 to 0.7% Mo by weight percentage and consisting essentially of a matrix of ferrite structure single phase and fine precipitates with a grain size of smaller than 10 nm dispersed in the matrix, for example, a high strength hot rolled steel sheet which consists essentially of 0.06% or less C, 0.5% or less Si, 0.5 to 2.0% Mn, 0.06% or less P, 0.005% or less S, 0.1% or less Al, 0.006% or less N, 0.02 to 0.10% Ti, 0.05 to 0.6% Mo by weight percentage, and the balance being Fe, wherein fine precipitates with a grain size of smaller than 10 nm are dispersed in a matrix of ferrite structure single phase at a number per unit volume of 5×104/&mgr;m3 or higher. This steel sheet, which has tensile strength of not lower than 550 MPa, high elongation and excellent stretch flangeability, is suitable for intricately shaped automotive chassis parts such as a suspension arm.

Abstract: The present invention relates to a high strength hot rolled steel sheet containing 0.15% or less C, 0.02 to 0.35% Ti, and 0.05 to 0.7% Mo by weight percentage and consisting essentially of a matrix of ferrite structure single phase and fine precipitates with a grain size of smaller than 10 nm dispersed in the matrix, for example, a high strength hot rolled steel sheet which consists essentially of 0.06% or less C, 0.5% or less Si, 0.5 to 2.0% Mn, 0.06% or less P, 0.005% or less S, 0.1% or less Al, 0.006% or less N, 0.02 to 0.10% Ti, 0.05 to 0.6% Mo by weight percentage, and the balance being Fe, wherein fine precipitates with a grain size of smaller than 10 nm are dispersed in a matrix of ferrite structure single phase at a number per unit volume of 5×104/&mgr;m3 or higher. This steel sheet, which has tensile strength of not lower than 550 MPa, high elongation and excellent stretch flangeability, is suitable for intricately shaped automotive chassis parts such as a suspension arm.

Abstract: A method for manufacturing a steel sheet comprising continuously casting a steel containing 0.04 to 0.2 wt. % C, 0.25 to 2 wt. % Si, 0.5 to 2.5 wt. % Mn, and 0.1 wt. % or less Al to form a slab; hot-rolling by rough-rolling the slab to form a sheet bar and finish-rolling the sheet bar with a reduction in thickness at the final stand of less than 30%, the finish-rolling being completed at a temperature from the Ar3 transformation point to the Ar3 transformation point +60° C.; primary-cooling the hot-rolled steel sheet, the primary cooling being started within 1 second after the completion of hot-rolling and conducting the cooling at a cooling speed of higher than 200° C./sec down to a temperature of Ar3 −30° C. to the Ar1 transformation point; slow cooling or air-cooling the primary-cooled steel sheet at a temperature of the Ar3 transformation point to the Ar1 transformation point at 10° C.

Abstract: The method for manufacturing steel sheet comprises the steps of: rough-rolling to form a sheet bar; finish-rolling the sheet bar to form a steel strip; applying primary cooling and secondary cooling to the finish-rolled steel strip; and coiling the secondary-cooled steel strip. The primary cooling is conducted at cooling speeds of 120° C./sec or more down to the temperatures of from 500 to 800° C. The secondary cooling is conducted at cooling speeds of less than 60° C./sec.

Abstract: A high tensile strength hot-rolled steel sheet comprises 0.04 to 0.09% C, 0.1% or less Si, 0.5 to 1.5% Mn, 0.02% or less P, 0.01% or less S, 0.1% or less Al, 0.001 to 0.008% N, and 0.01 to 0.15% Ti, by mass %, the content of ingredient there each satisfying the equation (1), and the ferritic grain size &agr; (&mgr;m) satisfying the equation (2): [C]+7×[Si]+0.1×[Mn]+[P]+14×[S]+1.75×[Al] +23×[N]+[Ti]+18×[O]+7×[Cu]+18×[Sn]+7×[Mo]+ 1.7×[Cr]+70×[B]+7×[Ca]+14×[Zr]+14×[V]+7×[Nb] ≦2  (1) 3≦&agr;≦60×[Ti]+8  (2) where, [X] denotes the content (mass %) of element X.

Abstract: In a heavy duty radial tire, a reinforcement belt 8 outward in a radial direction of the tire and a high-strength belt 13 inward in the radial direction are arranged between a radial carcass 2 and a tread rubber 4, and an intersect angle between cord 6a of an innermost wide-width slant cord layer 6 in the reinforcement belt 8 and cord 12a of an outermost narrow-width slant cord layer 12 in the high-strength belt 13 is not less than 10° at an acute angle side, and narrow-width slant cord layers 11, 12 of the high-strength belt 13 in the tire mounted onto a rim and inflated under a maximum air pressure have a width corresponding to 20˜60% of a ground contact width of the tread rubber 4, and inclination angles of cords 11a, 12a with respect to an equatorial plane 5 of the tire are not more than 15°, and a rubber gauge t1 of a first rubber layer 14 between cord 6a of an innermost wide-width slant cord layer 6 and cord 12a of an outermost narrow-width slant cord layer 12 is 0.9˜3.

Abstract: A heavy duty pneumatic radial tire comprises a carcass ply, a belt disposed at an outside of the carcass ply in the radial direction and comprised of two or more belt layers, at least one auxiliary belt layer disposed in a widthwise central portion of the belt at a width narrower than that of the belt, and a tread, wherein when the tire is mounted onto a design rim defined in TRA standard and inflated under an internal pressure corresponding to 10% of an air pressure defined in the TRA standard, a radius of curvature of an outer profile at both side regions of the tread (Rs) is made larger than a radius of curvature of the outer profile at a central region of the tread (Rc).

Abstract: The present invention relates to a high strength hot rolled steel sheet containing 0.15% or less C, 0.02 to 0.35% Ti, and 0.05 to 0.7% Mo by weight percentage and consisting essentially of a matrix of ferrite structure single phase and fine precipitates with a grain size of smaller than 10 nm dispersed in the matrix, for example, a high strength hot rolled steel sheet which consists essentially of 0.06% or less C, 0.5% or less Si, 0.5 to 2.0% Mn, 0.06% or less P, 0.005% or less S, 0.1% or less Al, 0.006% or less N, 0.02 to 0.10% Ti, 0.05 to 0.6% Mo by weight percentage, and the balance being Fe, wherein fine precipitates with a grain size of smaller than 10 nm are dispersed in a matrix of ferrite structure single phase at a number per unit volume of 5×104/&mgr;m3 or higher. This steel sheet, which has tensile strength of not lower than 550 MPa, high elongation and excellent stretch flangeability, is suitable for intricately shaped automotive chassis parts such as a suspension arm.