公开(公告)号：WO1994005443A1

公开(公告)日：1994-03-17

申请号：PCT/US1992008900

申请日：1992-10-19

Applicant: CATERPILLAR INC.

Inventor： CATERPILLAR INC. ,  SMOCK, Danny, R.

IPC: B21D28/32

CPC classification number: B21D28/32 ,  Y10S83/917 ,  Y10T83/5769 ,  Y10T83/8785 ,  Y10T83/8831 ,  Y10T83/9444

Abstract: A punching arrangement (24) has a guide assembly (56) for guiding movement of a second die (50) at an acute angle "A" relative to a first die (36) in order to punch an aperture (22) at an acute angle "a" in a flange of a track shoe (18). A positioning device moves the track shoe (18) to a preselected location relative to the first die (36) in response to movement of the second die (50) toward the first die (36). A holding apparatus (98) engages the track shoe (18) and clamps the track shoe (18) to the first die (36) in response to further movement of the second die (50) toward the first die (36). A crank mechanism (140) breaks the second die (50) away from binding engagement with the track shoe (18) after punching and enables the second die (50) to return to the initial position. The punching arrangement (24) is particularly suited for use in a punching press (12).

Abstract translation: 冲压装置（24）具有导向组件（56），用于以相对于第一模具（36）以锐角“A”引导第二模具（50）的运动，以便将尖端（22）冲压成尖锐 在轨道鞋（18）的凸缘中的角度“a”。 定位装置响应于第二模具（50）朝向第一模具（36）的移动，将履带板（18）相对于第一模具（36）移动到预选位置。 保持装置（98）响应于第二模具（50）朝向第一模具（36）的进一步移动而接合履带板（18）并将履带板（18）夹紧到第一模具（36）。 曲柄机构（140）在冲压之后使第二模具（50）远离与履带板（18）的装订接合断裂，并且使得第二模具（50）能够返回初始位置。 冲压装置（24）特别适用于冲压机（12）。

公开(公告)号：WO1993024741A1

公开(公告)日：1993-12-09

申请号：PCT/US1993004418

申请日：1993-05-11

Applicant: CATERPILLAR INC.

Inventor： CATERPILLAR INC. ,  FALETTI, James, J. ,  BUI, Yung, T.

IPC: F01L13/04

CPC classification number: F01L13/04 ,  F02B3/06 ,  F02N7/08

Abstract: Starting systems for use with internal combustion engine have in the past used a variety of add on mechanical mechanisms to provide cold starting. Many of these systems fail to provide the option of controllably and modulatively varying the sequence and amount of the opening and closing of an intake or exhaust valve relative to a piston position in a cylinder bore. The present invention provides an electronic control system (119) outputting a discrete control signal (120), and an opening device (94) for unit actuation of each of the pair of valves (76) independently. The electronic control system (119) is programmable to respond in a first predetermined logic pattern for conventional operation of the engine (10) at which time each of the pair of valves (76) is in the open position (92) during the exhaust stroke. The electronic control system (119) is programmable to a second predetermined logic pattern to vary the operation of the valves associated with the respective bore (28) in the generally closed position (86) for a portion of the exhaust stroke before top dead center (44) during the exhaust stroke of the piston (38). The preestablished logic pattern controllably, sequentially and modulateably actuate the device (94) for unit actuation, moving each of the valves (76) independently between the open and closed position (86, 92) to effectively increase the heat within the bore (28) during the movement of a piston (38) from a bottom dead center position (44) to a top dead center position (46).

公开(公告)号：WO1993024740A1

公开(公告)日：1993-12-09

申请号：PCT/US1993004700

申请日：1993-05-17

Applicant: CATERPILLAR INC.

Inventor： CATERPILLAR INC. ,  CLARKE, John, M. ,  FALETTI, James, J.

IPC: F01L09/04

CPC classification number: F01L9/02 ,  F01L1/26 ,  F01L9/04 ,  F02B3/06 ,  F02B69/06 ,  F02B2075/025 ,  F02B2075/027 ,  F02D23/02 ,  F02F1/4214 ,  F02F2001/247 ,  Y02T10/144

Abstract: During low speed operation of a turbocharged engine (10) the transient response time of the engine from low speed and low loads to high speed and high loads is slow because of the slow response time to raise the boost pressure level from the turbocharger (57). The present invention provides an apparatus (11) to improve the transient response time of the engine (10) by causing at least a selected subset of the combustion chambers (44) to be operated in a two-stroke pumping mode of operation while maintaining the others in a four-stroke mode, thus, increasing the airflow through the turbine (59) of the turbocharger (57) during low speed and/or low loads operation of the engine (10) maintaining a high boost pressure level.

公开(公告)号：WO1993020346A1

公开(公告)日：1993-10-14

申请号：PCT/US1992004115

申请日：1992-05-18

Applicant: CATERPILLAR INC.

Inventor： CATERPILLAR INC. ,  YOUNG, Paul, M.

IPC: F02D41/24

CPC classification number: G01D5/24404 ,  F02D41/009 ,  F02P5/1504 ,  F02P7/0775 ,  H03M1/208 ,  H03M1/303 ,  Y02T10/46

Abstract: In one aspect of the present invention, a method determines the rotational position of a crankshaft (110) of an internal combustion engine (100). The method includes monitoring the rotation of the crankshaft (110) and responsively producing a crankshaft pulsetrain. A clock signal is produced having a predetermined frequency. The clock signal and the crankshaft pulsetrain are received. Each pulse of the crankshaft pulsetrain is sampled, and responsively the period of each sampled pulse is determined. Signals representative of the determined pulse periods are produced. The method further includes receiving the determined pulse period signals, and responsively determining a value which is predictive of a period of the next pulse to be produced. A signal representative of the predictive value is produced, and the predictive value signal is received. An intermediate position signal based on the predictive value is produced. The intermediate position signal is representative of a predetermined angular rotation of the crankshaft (110).

公开(公告)号：WO1993014327A1

公开(公告)日：1993-07-22

申请号：PCT/US1992009015

申请日：1992-10-26

Applicant: CATERPILLAR INC.

Inventor： CATERPILLAR INC. ,  BUDZICH, Tadeusz +di

IPC: F16D31/02

CPC classification number: F03C1/0655

Abstract: A hydraulic piston type motor having a rotating piston barrel (28) abutting a fixed porting plate (46) or head with a starting charge device (78) operating to supply a limited hydrostatic pressure between the porting plate (46) and rotating barrel (28) to reduce starting friction and improve starting torque.

公开(公告)号：WO1993014317A1

公开(公告)日：1993-07-22

申请号：PCT/US1992009016

申请日：1992-10-26

Applicant: CATERPILLAR INC.

Inventor： CATERPILLAR INC. ,  BUDZICH, Tadeusz +di

IPC: F04B23/06

CPC classification number: F04B49/007 ,  F04B49/08

Abstract: In the present fluid system (10), a variable pressure inlet system (38) is provided and operational to control the operating pressure level of a charge pump (18) in response to various operating parameters of the fluid system (10). The charge pump (18) provides pressurized fluid to an inlet (34) of a hydraulic pump (16) to insure filling of the pumping chambers therein. By having the operating pressure level of a variable pressure relief valve (68) that is connected to the charge pump (18) controlled between a minimum pressure level and a maximum pressure level responsive to various operating perimeters of the system, the degree of horsepower needed to drive the charge pump (18) is controlled. The operating pressure level of the variable pressure relief valve (68) may be controlled in response to movement of a swash plate (62) of the hydraulic pump (16), the speed of the input drive mechanism (20) to the hydraulic pump (16), the movement of the spool (110) of the control valve (24), or by the operating pressure level representative of a load L or by any combinations thereof acting in parallel one with the other.

公开(公告)号：WO1993013340A1

公开(公告)日：1993-07-08

申请号：PCT/US1991009742

申请日：1991-12-23

Applicant: CATERPILLAR INC. ,  JUDY, Steven, William ,  SMITH, Vernon, Richard ,  STAHL, Alan, Lee

Inventor： CATERPILLAR INC.

IPC: F16H61/12

CPC classification number: F16H61/12 ,  B60K31/00 ,  F16H2061/1208 ,  F16H2061/1224 ,  F16H2061/124 ,  F16H2061/1264 ,  F16H2061/1268 ,  F16H2061/1284 ,  G07C5/0808 ,  Y10S477/902 ,  Y10S477/906

Abstract: In accordance with one aspect of the present invention, an apparatus (10) is provided for a vehicle equipped with a drive system (12) and a controller (16) for regulating the operating speed of the drive system. The apparatus (10) includes at least one sensor (23) for sensing a vehicle parameter and producing a parameter signal in response to the sensed parameter. A diagnostic device (24) is provided for receiving the parameter signal, processing the parameter signal to detect the presence of an undesirable operating condition; determining the severity of the undesirable operating condition in accordance with a preselected strategy and responsively producing a severity level signal. The controller (16) receives the severity level signal and limits the maximum speed of the vehicle in response to the severity level signal, whereby the maximum allowable vehicle speed decreases as the severity level signal increases.

Abstract translation: 根据本发明的一个方面，提供了一种装备有用于调节驱动系统的操作速度的驱动系统（12）和控制器（16）的车辆的装置（10）。 装置（10）包括用于感测车辆参数的至少一个传感器（23），并响应于所感测的参数产生参数信号。 提供诊断装置（24）用于接收参数信号，处理参数信号以检测是否存在不期望的操作条件; 根据预选策略确定不期望的操作条件的严重性，并响应地产生严重程度级信号。 控制器（16）接收严重等级信号，并根据严重等级信号限制车辆的最大速度，由此最大允许车速随严重等级信号的增加而减小。

公开(公告)号：WO1993013309A1

公开(公告)日：1993-07-08

申请号：PCT/US1991009707

申请日：1991-12-23

Applicant: CATERPILLAR INC. ,  WEBER, J., Roger

Inventor： CATERPILLAR INC.

IPC: F02M59/32

CPC classification number: F02M57/026 ,  F02M57/025 ,  F02M59/105 ,  F02M59/18 ,  F02M59/32

Abstract: It is desirable that the amount of fuel injected into a combustion cylinder of an engine be controlled or metered based upon engine operating conditions. Typically, in unit fuel pump injectors, fuel is passed into a chamber below an axially displaceable plunger, compressed by a downward stroke of the plunger, and ejected from the chamber and injector under pressure. The amount of fuel ejected is controlled by controlling the downward displacement of the plunger or by the use of a scrolled plunger and a spill port. Such a control is imprecise and limited in usefulness. The present invention is a novel method for metering the amount of fuel ejected from the injector (12). Basically, the plunger (56) begins at a first position adjacent a hard stop (58). The plunger (56) is then raised a predetermined distance corresponding to a volume of fuel to be ejected. The plunger is then forced down until the plunger (56) is again against the hard stop (58) thereby ejecting a precisely metered volume of fuel.

Abstract translation: 根据发动机的运转条件，可以控制或计量喷射到发动机的燃烧气缸内的燃料量。 通常，在单元燃料泵喷射器中，燃料被传送到轴向移动的柱塞下方的腔室中，通过柱塞的向下冲程压缩，并在压力下从腔室和喷射器喷射。 通过控制柱塞的向下位移或通过使用滚动柱塞和溢出口来控制排出的燃料量。 这样的控制是不精确的并且在有用性方面受到限制。 本发明是一种用于计量从喷射器（12）喷出的燃料量的新方法。 基本上，柱塞（56）在与硬止动件（58）相邻的第一位置处开始。 然后将柱塞（56）升高到与要喷射的燃料的体积相对应的预定距离。 柱塞然后被迫下降直到柱塞（56）再次抵靠硬止动件（58），从而喷射精确计量的体积的燃料。

公开(公告)号：WO1993013269A1

公开(公告)日：1993-07-08

申请号：PCT/US1992008439

申请日：1992-10-05

Applicant: CATERPILLAR INC.

Inventor： CATERPILLAR INC. ,  CORCORAN, Paul, T. ,  KOKOS, George, B. ,  PHILIPS, David, O.

IPC: E02D03/026

CPC classification number: E02D3/026

Abstract: In the subject arrangement, a tooth (10) has an outer surface (24) which has at least six edges (26, 28, 30, 32, 34, 36) with a plurality of side surfaces (44, 46, 48, 50, 52, 54) extending therefrom and angled with respect thereto at an obtuse angle. The tooth has a generally rectangular base (16) with a longitudinal plane (18) defined therein parallel to the length of the generally rectangular base (16). Apexes (62, 64) defined by the side surfaces (50, 54 and 48, 52) are parallel with the longitudinal plane (18) and angled with respect to the outer surface (24) within the range of 115°-135°. The shape of the outer surface (24) along with the plurality of side surfaces (44, 46, 48, 50, 52, 54) extending therefrom at an obtuse angle with respect to the outer surface (24) provides a tooth (10) that readily penetrates and compacts the refuse material and/or soil while providing good traction of the compactor wheel with respect to the materials being compacted.

公开(公告)号：WO1993011369A1

公开(公告)日：1993-06-10

申请号：PCT/US1992007364

申请日：1992-08-31

Applicant: CATERPILLAR INC.

Inventor： CATERPILLAR INC. ,  MARCOTT, Tony, L. ,  BRANCH, Matthew, G. ,  NIPPERT, Andrew, H.

IPC: F16D25/14

CPC classification number: H01F7/1844 ,  F16D48/06 ,  F16D48/064 ,  F16D2048/0266 ,  F16D2500/1022 ,  F16D2500/3022 ,  F16D2500/3026 ,  F16D2500/3028 ,  F16D2500/7041 ,  F16D2500/70418 ,  F16D2500/7042 ,  F16H61/0251 ,  F16H61/061 ,  G01D5/2006 ,  G01R27/2611 ,  H01F2007/1855 ,  H01F2007/1861

Abstract: Electromagnetic actuators (14) having a coil (16) and an armature (18) are used in a number of applications in which it is useful to have an indication of the position of the armature (18) with respect to the coil (16) without the use of external sensors. Accordingly, an actuator control system (10) is provided for determining the position of the armature (18) with respect to the coil (16) in response to the magnitude and rate of change of current flowing in the coil (16).

Abstract translation: 在许多应用中使用具有线圈（16）和电枢（18）的电磁致动器（14），其中有用的是使电枢（18）相对于线圈（16）的位置的指示， 不使用外部传感器。 因此，提供致动器控制系统（10），用于响应于在线圈（16）中流动的电流的变化幅度和速率来确定电枢（18）相对于线圈（16）的位置。