摘要:
A method includes a step of calculating an estimated blending ratio of a mixed fuel supplied to a combustion chamber of an internal combustion engine and a following equation is effected in this step to derive the estimated blending ratio:B(t)=k*B(t-1)+(1-k)*Bs(t-n)where t is an integer,n is a first delay coefficient set according to an operation parameter and a type of the engine,B(t-1) is an estimated blending ratio derived in the preceding cycle,Bs(t-n) is a blending ratio obtained by use of said blending ratio sensor in a cycle which was effected n cycles before the current cycle, andk is a second delay coefficient set according to a operation parameter and the type of the engine.
摘要翻译:一种方法包括计算供给到内燃机的燃烧室的混合燃料的估计混合比例的步骤,并且在该步骤中实现以下等式以导出估计的混合比:B(t)= k * B( t(t-1)+(1-k)* Bs(tn)其中t是整数,n是根据操作参数和发动机的类型设定的第一延迟系数,B(t-1) 在前一周期中导出的比率Bs(tn)是在当前周期之前n个循环的循环中使用所述混合比率传感器获得的混合比,并且k是根据操作参数设置的第二延迟系数, 发动机的类型。
摘要:
A fuel blending ratio detecting method is provided which includes a feedback computing compensation coefficient K.sub.FB on the basis of an air/fuel ratio responsive output V.sub.o of an O.sub.2 sensor, computing a feedback learned value K.sub.LRN on the basis of the feedback compensation coefficient K.sub.FB at intervals of a predetermined period, and multiplying the current blending ratio compensation coefficient K.sub.B by this feedback learned value K.sub.LRN to compute the next blending ratio compensation coefficient K.sub.B. Thus, the quantity of fuel supplied to the internal combustion engine can be always controlled accurately on the basis of the computed blending ratio compensation coefficient.
摘要:
A fuel blending ratio detecting method computes a control blending ratio on the basis of blending ratio information generated from a blending ratio sensor or air/fuel ratio information generated from an O.sub.2 sensor, and when the engine is stopped, the control blending ratio detected at that time is stored in a backup memory as a memory blending ratio. At the time of re-starting the engine, the memory blending ratio can be used as the control blending ratio B for a predetermined limited period.
摘要:
An air-fuel ratio feedback control method for a multi-fuel internal combustion engine using a dual O.sub.2 sensor system is provided, in which the concentration of oxygen in exhaust gas on the upstream side of an exhaust gas purifier is detected, a value corresponding to the detected oxygen concentration is compared with a first target value, and the air-fuel ratio is feedback-controlled in accordance with the result of the comparison. The mixture ratio of at least two fuels is detected, and a second target value is set in accordance with the detected fuel mixture ratio. On the other hand, the concentration of oxygen in the exhaust gas on the downstream side of the exhaust gas purifier is detected, and a value corresponding to the detected downstream-side oxygen concentration is obtained. The first target value is corrected in accordance with the difference between the obtained value and the second target value.
摘要:
Provided is an optical vortex laser oscillation device which is capable of an increased out and can generate an optical vortex even in a wide frequency range and if the optical vortex has a quantum number which is not an integer. A laser device according to one embodiment of the present application comprises: a laser light source for generating laser light; an optical vortex generation unit for generating an energized optical vortex on the basis of the laser light generated by the laser light source; and an optical resonance unit for resonating the energized optical vortex generated by the optical vortex generation unit and dividing the energized optical vortex into signal light and idler light. Therein, it is preferable that the optical resonance unit comprises a non-liner medium and a pair of resonator mirrors sandwiching the non-linear medium, and it is preferable that the non-linear medium includes at least one among KTiOPO4, periodically polarization-reversed LiNbO3, and periodically polarization-reversed LiTaO3.
摘要:
A fuel control device for an internal combustion engine determines that the internal combustion engine is in a transient state, by a criterion D, and makes fuel correction, where the transient-state criterion D is set to be a more relaxed criterion (=|ΔTHaf|) when forcible modulation control is being performed, compared with a normal criterion (=|ΔTHn|) used when the forcible modulation control is not being performed.
摘要:
In an exhaust system, there are provided an HC absorbent which absorbs HC contained in exhaust when in a specified low-temperature range and desorbs the absorbed HC when it exceeds said low-temperature range, and a catalyst capable of at least removing HC by oxidation, where the catalyst is arranged at the same position as or downstream of the HC absorbent. When it is found that the HC absorbent is in a state ready for desorbing the absorbed HC (S16, S18) and the internal combustion engine is in a specified decelerating state (S14), fuel supply to some of the cylinders of an internal combustion engine is stopped while fuel is supplied to the other cylinders (partial fuel cut) (S22).
摘要:
Terminals are connected via cables in a star-shaped fashion with respect to a HUB in a LAN. Each of the cables includes therein signal lines and power feed lines. The HUB includes therein a power feed section. The power feed section and the power feed lines of each cable are connected to measure a value of current which flows in the power feed lines. If it is judged based on the measured current value that the terminal connected to the corresponding cable is a telephone terminal, the power feeding to the corresponding power feed lines is continued. On the other hand, if the terminal is judged to be a terminal other than the telephone terminal, the power feeding is stopped.
摘要:
The present invention relates to a degradation estimating apparatus for an unburned fuel component adsorption catalyst, which is connected with an internal combustion engine and has an unburned fuel component adsorbent and an oxygen storage component. The apparatus includes a degradation estimating unit for making estimation for a degradation of the unburned fuel component adsorption catalyst on the basis of a first term and a second term. The first term that is from the cancellation of the fuel supply to detecting a variation of an upstream side air-fuel ratio occurring due to the increase of the reductant quantity in the exhaust gas. The second term that is from the cancellation of the fuel supply to detecting of a variation of the downstream side air-fuel ratio due to an increase of the reductant quantity.
摘要:
There is provided a combustion chamber structure in an internal combustion engine in which, at a peripheral portion of a combustion chamber, a gap between a cylinder head lower face and a piston upper face is small in intake-to-intake and exhaust-to-exhaust zones and gradually increases toward an intake-to-exhaust zone. According to such design, the mixture in the peripheral portion of the combustion chamber can smoothly flow from the intake-to-intake and exhaust-to-exhaust zones to the intake-to-exhaust zone along the peripheral face of the cylinder. The flow of air-fuel mixture from the intake-to-intake zone collides at the center of the intake-to-exhaust zone with the flow of mixture from the exhaust-to-exhaust zone, and the combined flow goes over a conical tapered portion in the upper face of the piston and vigorously enters a central recessed portion thereof. Therefore, it is possible to satisfactorily mix an air-fuel mixture with a simplified configuration.