摘要:
A method for preventing overheating of an exhaust purifying device by means of an air-flow sensor for sensing the amount of air drawn into an engine to generate an analog voltage corresponding to the amount of air drawn, an intake-air temperature sensor for sensing the temperature of the air drawn into the engine to generate an analog voltage corresponding to the temperature of the air drawn, a water temperature sensor for sensing the temperature of the engine cooling water temperature to generate an analog voltage corresponding to the cooling water temperature, a temperature sensor mounted on a converter, an RPM sensor for sensing the rotational speed of the engine to generating a pulse signal of a frequency corresponding to the engine speed, and a circuit responsive to the detection signals from the sensors for computing the desired amount of fuel injected. The computing circuit controls the ON and OFF periods of fuel injection valves to adjust the fuel injection quantity. When the exhaust temperature exceeds a predetermined value, the air-fuel ratio is compensated for the then current engine operating conditions and the compensation amount is then stored in a memory, whereby each time the same engine operating conditions are repeated, the air-fuel ratio is compensated in accordance with the stored compensation data to thereby prevent overheating of the exhaust purifying device.
摘要:
An air-to-fuel ratio control apparatus for a combustion engine which attains the combustion on combustible mixture in the engine cylinder to rotate the engine output shaft. A piezoelectric pressure detector secured to the combustion engine detects a pressure in the engine cylinder and three rotational position detectors respectively detect a first, second and third rotational positions of the engine output shaft. The second rotational position is determined to be intermediate between the first and third rotational positions and correspond to the transition point from compression to power strokes of the combustion engine. An electronic circuit compares a portion of and another portion of a pressure signal produced by the pressure detector during respective rotational intervals determined by the first and second rotational positions and by the second and third rotational positions to discriminate whether the combustion engine attained a complete combustion or not. The combustible mixture supplied to the engine cylinder is controlled to a lean limit so long as the complete combustion is attained. The pressure responsive control is prevented when an air-to-fuel ratio detector detects that the combustible mixture subjected to the combustion is richer than the stoichiometric mixture.
摘要:
A process for producing soft copolymers which comprises copolymerizing ethylene and butene-1 in the presence of a catalyst comprising (1) a reaction product of (A) an organic titanium compound of the formula,Ti(OR).sub.n X.sub.4-nwherein R is a hydrocarbon residue having 1 to 10 carbon atoms, X is a halogen atom and n is a number satisfying the equation 0
摘要:
A closed loop air-to-fuel ratio control system having an oxygen responsive sensor and a feedback circuit is disclosed. The sensor is disposed in an engine exhaust passage to produce a voltage indicative of the oxygen concentration in the exhaust gas. This voltage is integrated in the feedback circuit to cause the mixture air-to-fuel ratio to be corrected in response thereto. The integration is controlled by the integration controller to shift the mixture air-to-fuel ratio to the one other than the stoichiometric ratio. This integration controller can be made responsive to specific engine operating conditions such as throttle valve movement.
摘要:
A high strength steel, including about 0.05 to about 0.25% of C, less than about 0.5% of Si, about 0.5 to about 3.0% of Mn, not more than about 0.06% of P, not more than about 0.01% of S, about 0.50 to about 3.0% of Sol. Al, not more than about 0.02% of N, about 0.1 to about 0.8% of Mo, about 0.02 to about 0.40% of Ti, and the balance of iron and unavoidable impurities, wherein the steel has a structure formed of at least three phases including a bainite phase, and a retained austenite phase in addition to a ferrite phase having a composite carbide containing Ti and Mo dispersed and precipitated therein, wherein the total volume of the ferrite phase and the bainite phase is not smaller than 80%, the volume of the bainite phase is about 5% to about 60%, and the volume of the retained austenite phase is about 3 to about 20%.
摘要:
According to the present invention, a gene cluster encoding various kinds of prenyl transferase of Hevea brasiliensis is obtained, and the nucleotide sequences of these genes are determined. The prenyl transferases are involved in the biosynthesis of isoprene backbone of natural rubber. Therefore, improvement of productivity of rubber can be expected, by transforming plants by the gene cluster obtained in the present invention.
摘要:
A fluid feed pump is configured, such that a fluid is fed from an outlet channel of the fluid feed pump through an outlet buffer chamber to a fluid channel. The outlet buffer chamber is designed to have a higher compliance than a compliance of a pump chamber. The driving period of the fluid feed pump is set to a shorter period than a time constant defined by the compliance of the pump chamber and a flow resistance between an inlet of the outlet channel and an outlet of the fluid channel. This enables the fluid to be fed with high efficiency by taking advantage of the pressure oscillation occurring between the pump chamber and the outlet buffer chamber.
摘要:
It is to suppress the interference of the reflected light easily and securely even in a highly fine liquid crystal display device. The reflection plate comprises recessed or protruded parts and a reflection film formed over the recessed or protruded parts. A unit shape of the recessed or protruded parts is a polygon, an arbitrary point other than a centroid of the polygon that constitutes the recessed or protrude part is placed at a position that meets with an orderly-mannered lattice point as an origin, and each of the unit-shape polygons is arranged at a position that is rotated randomly with respect to the origin.
摘要:
An image processing apparatus (10) includes a bus (B1) and a bus (B2). A series of processes for creating YUV image data for HDTV is executed by means of a bus (B1) and an SDRAM (32). Furthermore, a series of processes for creating YUV image data for LCD monitor (66) is executed by means of a bus (B3) and an SDRAM (54). Here, the resolution of the YUV image data for HDTV is higher than that of the YUV image data for LCD monitor. That is, the bus (B1) and the SDRAM (32) are utilized for high-resolution moving image data processing, and the bus (B3) and the SDRAM 54 are utilized for low-resolution moving image data processing.
摘要:
A printer-plotter includes first and second heads which are supported by a guide rail and are movable along a longitudinal direction of the guide rail, independently. A driving member is supported by the guide rail and configured to move along the longitudinal direction between the first head and the second head. A first connecting mechanism is configured to connect the first head to the driving member detachably. A second connecting mechanism is configured to connect the second head to the driving member detachably. The first head is connected to the driving member by the first connecting mechanism and the second head is separated from the driving member in order to make the first head operate. The second head is connected to the driving member by the second connecting mechanism and the first head is separated from the driving member in order to make the second head operate.