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公开(公告)号：US5190008A
公开(公告)日：1993-03-02
申请号：US921961
申请日：1992-08-04
CPC分类号： F02P5/045 , F02D37/02 , F02D41/1475 , F02D41/1487 , F02P5/1504 , F02P5/1514 , Y02T10/46
摘要： A lean burn internal combustion engine has a basic fuel injection amount calculated and multiplied by a lean correction factor, the resulting amount controls the air fuel ratio of the engine. The lean correction multiplied by factor is calculated from a first map based on intake pressure and engine speed. However, when the degree of opening of the throttle valve is larger than a predetermined value, a second correction map based on the degree of opening of the throttle valve and engine speed is used to obtain the lean correction factor. When the second correction map is employed, an ignition timing map based on the degree of opening of the throttle valve and engine speed is used to obtain an ignition timing; instead of the usual ignition timing, based on intake pressure and engine speed.
摘要翻译： 稀燃内燃机具有计算出的基本燃料喷射量和乘以精密校正系数，所得到的量控制发动机的空燃比。 根据进气压力和发动机转速，从第一张地图计算精度校正乘以系数。 然而，当节流阀的开度大于预定值时，使用基于节流阀的开度和发动机转速的第二校正曲线来获得精益校正系数。 当使用第二校正图时，使用基于节气门的开度和发动机转速的点火正时图来获得点火正时; 而不是通常的点火正时，基于进气压力和发动机转速。
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公开(公告)号：US5067465A
公开(公告)日：1991-11-26
申请号：US655646
申请日：1991-02-14
IPC分类号： F02D41/14
CPC分类号： F02D41/1494
摘要： A lean burn internal combustion engine wherein a basic fuel amount is calculated from a map based on the intake pressure and the engine speed, and a lean correction factor, which is multiplied by the basic fuel amount, is calculated from a lean map based on the intake pressure and engine speed. A second lean map based on the throttle opening and engine speed is provided for obtaining a lean correction factor when the degree of opening of the throttle valve is larger than a predetermined value. A lean sensor is provided for obtaining a signal indicating the air fuel ratio for carrying out a feedback control. The lean sensor is provided with a heater for controlling the temperature of the sensing element of the heater. A basic map for the heater power, which is based on the intake pressure and engine speed, is provided, and a correction map for the heater power is provided for reducing the heater power from the value obtained from the basic map when the lean map based on the intake pressure and engine speed is employed for obtaining the lean air-fuel mixture, to prevent thermal damage to the sensor element.
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公开(公告)号：US5146885A
公开(公告)日：1992-09-15
申请号：US785166
申请日：1991-10-31
CPC分类号： F02D41/1475 , F02D41/1486
摘要： An air-fuel ratio control device for an engine, by which the air-fuel ratio of the air-fuel mixture supplied to the engine is changed. The device set the air-fuel ratio to a lean mixture when the engine load is lower than a set load value and predetermined set speed, and when the engine load become higher than the set load value, or the engine speed exceeds the set speed, the device switches the air-fuel ratio from a lean mixture to a rich mixture to obtain higher engine output. The set load value is varied in accordance with the engine speed such that it is reduced as the engine speed is increased.
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公开(公告)号：US5092297A
公开(公告)日：1992-03-03
申请号：US646663
申请日：1991-01-28
CPC分类号： F02D41/065 , F02D41/068 , F02D41/1475 , F02D2200/501
摘要： An air-fuel ratio control device for an vehicle engine, by which the air-fuel ratio of the air-fuel mixture supplied to a vehicle engine is changed. The device sets the air-fuel ratio to a lean mixture when the engine coolant temperature is higher than a predetermined value and the vehicle speed is higher than a value determined by a time elapsed after engine startup.
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公开(公告)号：US5080074A
公开(公告)日：1992-01-14
申请号：US643767
申请日：1991-01-22
CPC分类号： F02D41/2412 , F02D41/2496 , F02D41/32
摘要： An air-fuel ratio control device comprising a memory which stores the relationship between the degree of opening of the throttle valve and the absolute pressure in the intake passage, which pressure is produced when the engine is in a cruising state. When a difference between the blunt value of the actual absolute pressure in the intake passage and the absolute pressure stored in the memory exceeds a fixed value, the air-fuel mixture is changed from the mixture for the stoichiometric air-fuel ratio to a lean mixture.
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6.发明授权Method and apparatus for controlling torque variations in an internal combustion engine 失效用于控制内燃机中扭矩变化的方法和装置
公开(公告)号：US5060618A
公开(公告)日：1991-10-29
申请号：US646668
申请日：1991-01-28
CPC分类号： F02D41/005 , F02D41/1497 , Y02T10/47
摘要： In an internal combustion engine, a vibration period and a vibration amplitude are measured and the detected vibration period is compared with a natural vibration period prestored in accordance with a driving condition of the vehicle. If the detected vibration period is equal to the natural vibration period under the driving condition at which the vibration period is detected, it is determined that surging due to a torque variation of the engine is occurring. In this condition, the torque variation is controlled to be a predetermined value by increasing an air-fuel ratio or decreasing an amount of EGR when the detected vibration amplitude is smaller than a predetermined value, and the torque variation is controlled to a predetermined value by decreasing an air-fuel ratio or increasing an amount of EGR when the detected vibration amplitude is larger than a predetermined value, and accordingly, the driveability and emission rate are improved.
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公开(公告)号：US5058556A
公开(公告)日：1991-10-22
申请号：US638844
申请日：1991-01-08
IPC分类号： F02D35/00 , F02D41/14 , F02D41/22 , F02D45/00 , G01N27/406
CPC分类号： G01N27/4065 , F02D41/148
摘要： A device for determining an activated condition of the oxygen sensor of a lean sensor for an electric-controlled fuel injection internal combustion engine. When the engine is under a fuel cut operation, the output level from the oxygen sensor is compared with a first predetermined threshold level or with a second predetermined threshold level which is lower than the first threshold level. A determination of the activated condition of the oxygen sensor is obtained when the output level from the oxygen once exceeds the higher first level, or when the output level from the oxygen sensor consecutively exceeds the higher first level twice, whereby a positive and quick determination of the activated condition of the oxygen sensor can be obtained.
摘要翻译： 一种用于确定用于电控燃料喷射内燃机的稀薄传感器的氧传感器的激活状态的装置。 当发动机处于燃料切断操作时，将来自氧气传感器的输出水平与第一预定阈值水平或低于第一阈值水平的第二预定阈值水平进行比较。 当来自氧气的输出水平一次超过较高的第一水平，或当来自氧气传感器的输出水平连续超过较高的第一水平两次时，可以确定氧传感器的激活状态，从而正确和快速地确定 可以获得氧传感器的激活状态。
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公开(公告)号：US5502920A
公开(公告)日：1996-04-02
申请号：US337954
申请日：1994-11-10
申请人： Toshio Takaoka
发明人： Toshio Takaoka
CPC分类号： A01M1/245 , A01M2200/011 , Y10S43/90
摘要： A retrofittable insecticide distribution system comprising an above ground horizontal pipe (20) having a plurality of vertical pipes (30) penetrating into the ground. Fluid absorbing means (56) in housings (50) are provided around the ends of horizontal and vertical members and communicate with the horizontal pipes or a vertical pipe. Insecticide can be introduced into the system either by pumping or by being placed in an elevated reservoir (90) with gravity providing the pumping force. The vertical pipes in the ground can be provided with a variety of distribution means, including simple holes, a downwardly oriented sprinkler head (42) or a distribution ball (44) having a plurality of slots (46) filled with plastic beads (48).
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9.发明授权Probe using a mixed sub-electrode for measuring the activity of carbon in molton iron 失效探测使用混合亚电极测量铁粉中碳的活性
公开(公告)号：US5393403A
公开(公告)日：1995-02-28
申请号：US67417
申请日：1993-05-25
申请人： Minoru Sasabe , Yoshihiko Kawai , Yoshiteru Kikuchi , Toshio Takaoka , Hiromi Seno , Chikayashi Furuta , Toshio Nagatsuka
发明人： Minoru Sasabe , Yoshihiko Kawai , Yoshiteru Kikuchi , Toshio Takaoka , Hiromi Seno , Chikayashi Furuta , Toshio Nagatsuka
IPC分类号： G01N27/411 , G01N27/406 , G01N27/409 , G01N27/416
CPC分类号： G01N27/4114
摘要： A probe having the inventive composition, it is possible to measure the activity of the solute carbon which could not be measured by the prior art because there did not exist solid oxide or solid composite oxide which were stable at high temperature.The probe comprises a solid electrolyte having a mixed subelectrode provided on its surface, and a reference electrode for providing a predetermined oxygen potential is disclosed. The mixed sub-electrode coating on the solid electrolyte includes a mixture of a carbide MC and of an oxide MO of the element M other than carbon of which the carbide is constituted.
摘要翻译： 具有本发明组合物的探针可以测量现有技术无法测量的溶质碳的活性，因为不存在在高温下稳定的固体氧化物或固体复合氧化物。 探针包括在其表面上设置有混合子电极的固体电解质和用于提供预定氧势的参考电极。 固体电解质上的混合的副电极涂层包括碳化物MC和元素M的氧化物MO的混合物，所述氧化物MO除了其碳化物构成的碳之外。
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公开(公告)号：US5049357A
公开(公告)日：1991-09-17
申请号：US427129
申请日：1989-10-06
CPC分类号： C21C5/005 , C21C5/35 , C22C33/003 , C22C33/04
摘要： A method for economically manufacturing an iron-boron-silicon alloy through simple steps, which comprises the steps of: adding a boron raw material and a carbonaceous reducing agent to a molten iron received in a vessel; blowing oxygen gas into the molten iron to reduce the boron raw material in the molten iron by means of the carbonaceous reducing agent to prepare a boron-containing molten iron; continuing the blowing of oxygen gas to decarburize the boron-containing molten iron until the carbon content in the boron-containing molten iron decreases to up to 0.2 wt. %; and adding at least one of silicon and ferrosilicon to the boron-containing molten iron while stirring the boron-containing molten iron, thereby manufacturing an iron-boron-silicon alloy.
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