664results about How to "Precise ratio" patented technology

Embodiments for adjusting engine operating parameters based on output from an exhaust humidity sensor are provided. One example method for an engine comprises based on a dew point of exhaust gas, adjusting an exhaust gas sensor heater configured to heat an exhaust gas sensor disposed in an exhaust passage of the engine, the dew point based on output from a humidity sensor disposed in the exhaust passage.

The invention aims to provide a double-component glue automatic glue mixer with high safety performance, high production efficiency and good finished product quality. The automatic glue mixer comprises a glue storage mechanism, a glue transporting mechanism, a glue mixing mechanism, a reciprocating sizing mechanism, a heating insulation mechanism, a vat glue providing mechanism and a liquid level detection and electric control system. The glue storage mechanism employs a double glue storage barrel sealed structure. The glue transporting mechanism employs a structure of two motors connecting with the electric control system to ensure that an output glue proportion equals to a required glue proportion. The glue mixing mechanism employs a pneumatic performer to control two glues to enter into a mixing tube simultaneously and to mix fully through a double-spiral structured mixing core rod. The reciprocating sizing mechanism employs an automatic back-and-forth reciprocating motion apparatus. The heating insulation mechanism employs a multi-position heating to realize constant temperature of glue during an output process, so that an output proportion is more accurate. The vat glue providing mechanism realizes glue injection into the two glue storage barrels through the electric control system. The liquid level detection and electric control system realizes automatic control on an integral machine operation and controls glue proportion in a digitization approach with accurate proportion; besides the system can provide glue continuously to adapt high-speed automation production. The automatic glue mixer can ensure production efficiency, quality and safety; and compared with prior equipment, the automatic glue mixer is more convenient for operation, has a more reasonable structure and a more beautiful appearance.

The present invention discloses a bio-enzyme method preparing textile bamboo fibril and the method need not any chemical processing, has simple operation, short processing time and stabilizing product quality. The process is as follows: first of all, cutting bamboo and subdividing bamboo into bamboo strip, then boiling them in boiled water till they are soft, putting out, crushing and hammering into filament, then boiling in pressure cookers, immersing the treated bamboo filament in the solution containing bio-enzyme in order to the lignin, hemicellulose and pectin in bamboo filament can be dissociated by bio-enzyme and preparing the cellulose fiber in bamboo; then washing, bleaching, oiling, softening and opening the bamboo cellulose fiber dissociated by enzyme, then the bamboo fibril to be used for weaving is prepared. The invention solves the problem of stable product quality without any chemical treatment which is to be solved and has not been resolved.

An electronic valve actuation system and control method is described. The valve timing is changed between early and late intake valve closing depending on engine operating conditions. Further, valve timing is adjusted to control engine airflow or engine torque. Finally, air-fuel ratio is adjusted based on feedback from an exhaust gas oxygen sensor as well as an estimate of air, fuel, and residual exhausted from cylinders operating with late valve closing (after bottom dead center) timing.

The opening of a solenoid valve is automatically adjusted after an engine is started and before actual work is performed for an appropriate air-fuel ratio, whereby it is possible to attain a good and stable driving of the engine without any delay even for an abrupt change in load.

After the engine is started, when a rotation speed enters a “fuel flow rate adjusting rotation speed range” in which a definite load is applied to the engine in a working rotation speed range of the engine in which a throttle valve is opened to a definite opening, a detected rotation speed is fed back to a target rotation speed, and the opening of the solenoid valve is controlled to adjust a fuel flow rate, so that the combustion state in the engine is optimized at the valve opening so determined.

An internal combustion engine diagnostic device and an internal combustion engine diagnostic method identify an abnormal cylinder having an abnormal air-fuel ratio among a plurality of cylinders during the operation of an internal combustion engine. The internal combustion engine diagnostic device comprises: an air-fuel ratio control unit for changing the air-fuel ratio in a stepwise manner by controlling a fuel injection amount adjusting means that adjusts the fuel injection amount of each of the plurality of cylinders; and an abnormal cylinder identification unit for identifying an abnormal cylinder on the basis of the relationship between each air-fuel ratio changed in a stepwise manner and the number of misfires occurring in the plurality of cylinders, the number being counted by a misfire counter for each air-fuel ratio changed in a stepwise manner.

The invention relates to the technical field of alloy ingots, and in particular relates to a zirconium-based alloy ingot and a preparation method thereof as well as a prepared zirconium-based amorphous alloy. The preparation method of the zirconium-based alloy ingot comprises two steps, namely, a vacuum arc melting method and a vacuum high frequency melting method, wherein the vacuum arc melting method comprises steps of mixing and melting Ni metal and a high melting point method Nb metal, thereby reducing the melting temperature; in addition, except the impurities in the raw materials in the vacuum arc melting method, no other impurities are mixed, so that the purity of the alloy is ensured; a mother alloy obtained by using the vacuum arc melting method is further mixed with the rest materials for secondary melting, thereby obtaining a five-element alloy ingot with accurate proportion. The zirconium-based alloy ingot is die-cast in a vacuum environment, a cooling speed expected by over-cooling is met so as to prevent the materials from crystallization, and the zirconium-based amorphous alloy with the thickness of 0.5-3mm can be manufactured.

A wide range continuous diluter for diluting gases that contain small particles to allow subsequent measurement of the diluted gases with an instrument is provided. A dilution gas inlet receives a dilution gas, and a sample gas inlet receives a sample gas. A flow meter measures the sample gas flow rate. A mixer receives and mixes the dilution gas and the sample gas at a dilution ratio. An instrument flow outlet provides a well-defined flow into the instrument from the mixture flow. A make-up gas inlet is arranged to provide make-up gas into the mixture flow at a controlled rate. Because the dilution gas flows at a controlled rate and the mixture flows at a controlled rate, changing the flow rate of the make-up gas causes a responsive change in the sample gas flow rate, thereby allowing continuous adjustment and control of the dilution ratio when desired.

An InSAR and GNSS weighting method for three-dimensional surface deformation estimation includes steps of: Step 1: establishing a functional relationship between three-dimensional deformation d⁰ of an unknown point and a certain amount of InSAR/GNSS data L_i of surrounding points by using ascending and descending orbit InSAR data and GNSS data based on a strain model and observation imaging geometry: Step 2: performing relative weighting on K_i observation data in the InSAR/GNSS data L_i, and determining an initial weight matrix W_i of various InSAR/GNSS observations; Step 3: determining accurate weight matrix Ŵ_i between the various InSAR/GNSS observations by variance component estimation, and solving the three-dimensional deformation d⁰ based on a least square method; and Step 4: performing the steps 1-3 for each surface point to estimate a high-accurate three-dimensional surface deformation field by fusing InSAR and GNSS.

The invention relates to a double-labeling kit for detecting troponin (Tn) and a compound and preparation and detection methods of the double-labeling kit, and belongs to the field of immunodetectionanalysis technologies and nano-biotechnologies. The kit comprises a reaction buffer solution integrated on a reagent strip, a cleaning solution, an enhancement solution, a magnetic particle solution coating a cTnI monoclonal antibody, a europium-labeled cTnC monoclonal antibody solution and a samarium-labeled cTnI monoclonal antibody solution and 2-6 bottles of additional freeze-dried calibrationproducts of natural cTnI antigens (containing cTnC) with different concentrations. The kit can provide a nearly-homogeneous double-labeling reaction system to ensure that the content of cTnI with complete fragments and the cTnI-C compound is detected simultaneously, the detection time is shortened, the efficiency is improved, and convenience is brought to clinical use.

In a multicylinder internal combustion engine including a turbocharger, the turbocharger employs a twin-entry turbo where a turbine includes two exhaust gas inflow ports. A first exhaust passage guides an exhaust gas discharged from a first cylinder group of the internal combustion engine to one exhaust gas inflow port of the turbocharger. A second exhaust passage guides an exhaust gas discharged from a second cylinder group of the internal combustion engine to the other exhaust gas inflow port of the turbocharger. An exhaust gas collecting portion of the first exhaust passage and an exhaust gas collecting portion of the second exhaust passage each include an air-fuel ratio sensor. This configuration allows efficiently contact of the exhaust gas on an element portion of the air-fuel ratio sensor, thus accurately detecting an air-fuel ratio of the exhaust gas at an upstream side of a catalyst for each cylinder.

A prediction method according to the present invention is a method for predicting a modal damping ratio of a composite head including two or more kinds of materials including a first material and a second material. The method includes the steps of: presuming at least a coefficient Px of a generalized Maxwell model M1 in the first material using a known material damping ratio ζ1; obtaining a calculation model of the head using the generalized Maxwell model M1; and calculating the modal damping ratio of the head based on analysis of the head using the calculation model. Preferably, the Maxwell model is further used also for the second material. Preferably, the method further includes the step of presuming a coefficient Py of a generalized Maxwell model M2 in the second material using a known material damping ratio ζ2.