-
公开(公告)号：US20180245522A1
公开(公告)日：2018-08-30
申请号：US15905042
申请日：2018-02-26
CPC分类号： F02D15/04 , F02B75/041 , F02D15/02 , F02D41/005 , F02D41/0072 , F02D41/1402 , F02D2200/1002 , F02D2700/03
摘要： A control device for controlling an internal combustion engine equipped with an engine body, a variable compression ratio mechanism A configured to be able to change a mechanical compression ratio of the engine body, and an intake system configured to be able to make exhaust discharged from combustion chambers of the engine body be recirculated to an intake passage of the engine body. The control device is provided with a compression ratio control part controlling the variable compression ratio mechanism A so that the mechanical compression ratio becomes the target compression ratio. The compression ratio control part sets the target compression ratio at a lower value when exhaust is being recirculated at a predetermined operating region at an engine low load side than when exhaust is not being recirculated.
-
公开(公告)号：US09845724B2
公开(公告)日：2017-12-19
申请号：US15102747
申请日：2014-11-18
发明人： Makoto Okawa , Kazuhito Sakai
CPC分类号： F02B75/041 , F02D15/04 , F02F1/18 , F02F7/0002 , F16D15/00 , F16D41/08
摘要： An internal combustion engine comprises a variable compression ratio mechanism that changes the relative position of a cylinder block with respect to a crankcase and a controlling device that controls the variable compression ratio mechanism. The variable compression ratio mechanism contains a driving device that rotates a shaft that includes an eccentric axis, and the drive device includes a clutch that blocks reverse input and is disposed in a drive power transmission route that transmits the rotational power of a motor to the shaft. The control device fixes the mechanical compression ratio to a predetermined low mechanical compression ratio when the amplitude of the rotational power vibration applied to an output shaft of the clutch is less than a predetermined determination value.
-
公开(公告)号：US20160319768A1
公开(公告)日：2016-11-03
申请号：US15139727
申请日：2016-04-27
发明人： Takashi SUZUKI
CPC分类号： F02F1/004 , F02B75/041 , F02B75/045
摘要： An internal combustion engine includes a cylinder block, a cylinder liner, a piston, and a piston ring. The cylinder liner has a cylindrical shape, and is provided inside the cylinder block. The piston is positioned inside the cylinder liner. The piston includes a ring groove and a top land. The ring groove is positioned on an outer periphery of the piston in the vicinity of the top land. The piston ring is arranged inside the ring groove. The cylinder liner includes a first portion and a second portion. The first portion is positioned at least in a part of an inner periphery of the cylinder liner, which faces the top land of the piston when the piston is at a top dead center. The first portion includes a first inner periphery. The first inner periphery has a first radius. The second portion includes a second inner periphery. The second inner periphery has a second radius. The first radius is larger than the second radius by 100 μm to 1000 μm.
摘要翻译： 内燃机包括气缸体，气缸套，活塞和活塞环。 气缸套具有圆柱形形状，并且设置在气缸体内。 活塞位于气缸套内。 活塞包括环槽和顶部焊盘。 环形槽位于活塞顶部接地区附近的外周。 活塞环布置在环槽内。 气缸套包括第一部分和第二部分。 当活塞处于上止点时，第一部分至少位于气缸套的内周的一部分中，其面向活塞的顶部区域。 第一部分包括第一内周边。 第一内周具有第一半径。 第二部分包括第二内周边。 第二内周边具有第二半径。 第一半径比第二半径大100μm〜1000μm。
-
公开(公告)号：US20160319736A1
公开(公告)日：2016-11-03
申请号：US15102747
申请日：2014-11-18
发明人： Makoto OKAWA , Kazuhito SAKAI
CPC分类号： F02B75/041 , F02D15/04 , F02F1/18 , F02F7/0002 , F16D15/00 , F16D41/08
摘要： An internal combustion engine comprises a variable compression ratio mechanism that changes the relative position of a cylinder block with respect to a crankcase and a controlling device that controls the variable compression ratio mechanism. The variable compression ratio mechanism contains a driving device that rotates a shaft that includes an eccentric axis, and the drive device includes a clutch that blocks reverse input and is disposed in a drive power transmission route that transmits the rotational power of a motor to the shaft. The control device fixes the mechanical compression ratio to a predetermined low mechanical compression ratio when the amplitude of the rotational power vibration applied to an output shaft of the clutch is less than a predetermined determination value.
摘要翻译： 一种内燃机，具有改变缸体相对于曲轴箱的相对位置的可变压缩比机构和控制可变压缩比机构的控制装置。 可变压缩比机构包括使包括偏心轴的轴旋转的驱动装置，并且驱动装置包括阻挡反向输入并设置在将电动机的旋转动力传递到轴的驱动动力传递路径中的离合器 。 当施加到离合器的输出轴的旋转动力振动的振幅小于预定的确定值时，控制装置将机械压缩比固定为预定的低机械压缩比。
-
公开(公告)号：US09273605B2
公开(公告)日：2016-03-01
申请号：US13261928
申请日：2013-01-24
CPC分类号： F02B75/047 , F02B75/041 , F02D15/00 , F02D15/04
摘要： According to the present invention, a variable compression ratio engine includes a cylinder head and crankcase directly joined by a control shaft, thereby eliminating use of a link between the control shaft and cylinder head. The present invention has a low manufacturing cost and a small size ideal for mass production applications. In the preferred embodiment of the present invention, the control shaft includes a primary set of bearings and an eccentric set of bearings. The primary control shaft set of bearings are mounted directly in the crankcase assembly, and the eccentric control shaft bearings are mounted directly in the cylinder head assembly. There is only one control shaft per cylinder head, and there is no link between the control shaft and cylinder head assembly. The variable compression ratio mechanism also includes moment retaining means to prevent the cylinder head assembly from rotating out of alignment when the engine is running. The moment retaining means is a bushing that is mounted around the engine cylinder. The bushing provides the moment retaining means needed for holding the cylinder head assembly in alignment when the engine is running, and also provides displacement means, where the cylinder head assembly can slide on the bushing. The displacement means is needed to allow the cylinder head assembly to move relative to the crankcase when compression ratio is adjusted.
摘要翻译： 根据本发明，可变压缩比发动机包括由控制轴直接接合的气缸盖和曲轴箱，从而消除了控制轴和气缸盖之间的连杆的使用。 本发明具有低制造成本和小尺寸理想的大规模生产应用。 在本发明的优选实施例中，控制轴包括一组主轴承和一组偏心轴承。 主控轴组件直接安装在曲轴箱组件中，偏心控制轴轴承直接安装在气缸盖组件中。 每个气缸盖只有一个控制轴，控制轴和气缸盖组件之间没有连接。 可变压缩比机构还包括力矩保持装置，以防止气缸盖组件在发动机运转时旋转不对准。 力矩保持装置是安装在发动机气缸周围的衬套。 衬套提供了当发动机运行时将气缸盖组件保持对准所需的力矩保持装置，并且还提供位移装置，其中气缸盖组件可以在衬套上滑动。 当调节压缩比时，需要使用位移装置以允许气缸盖组件相对于曲轴箱移动。
-
公开(公告)号：US08818687B2
公开(公告)日：2014-08-26
申请号：US13142149
申请日：2008-12-25
申请人： Yukihiro Nakasaka
发明人： Yukihiro Nakasaka
CPC分类号： F02D15/04 , F02B75/041 , F02D13/0215 , F02D13/0261 , F02D13/0269 , F02D41/0002 , F02P5/1502 , F02P5/1514 , Y02T10/12 , Y02T10/142 , Y02T10/42 , Y02T10/46
摘要： A control pattern corresponding to a ultra high expansion cycle is executed, wherein an actual timing IVCa of an intake valve closing timing is controlled to agree with a steady adapted value IVCt, an actual value εma of a mechanical compression ratio is controlled to agree with a steady adapted value εmt, and an ignition timing SA is controlled to agree with a steady adapted timing SAt. There are four cases that might be generated, including a case in which the IVCa is shifted toward a retard angle side or toward an advance angle side from the IVCt due to a response delay of a variable intake valve timing apparatus, and a case in which εma is shifted to a greater side or to a smaller side from the εmt due to the response delay of a variable compression ratio mechanism.
摘要翻译： 执行对应于超高膨胀循环的控制模式，其中进气门关闭正时的实际定时IVCa被控制为与稳定适应值IVCt一致，机械压缩比的实际值和等于m被控制为一致 具有稳定的适应值＆egr; mt，并且点火正时SA被控制以与稳定的适应时间SAt一致。 可能产生四种情况，包括IVCa由于可变进气门正时装置的响应延迟而向IVCt的延迟角侧或向前角侧偏移的情况，以及其中 由于可变压缩比机制的响应延迟，电机被转移到更大的一侧或更小的一侧。
-
公开(公告)号：US08807100B2
公开(公告)日：2014-08-19
申请号：US13881286
申请日：2010-11-08
申请人： Eiichi Kamiyama
发明人： Eiichi Kamiyama
IPC分类号： F01L1/34
CPC分类号： F02M25/077 , F01L1/3442 , F01L2001/0537 , F01L2001/3443 , F02B37/00 , F02B75/041 , F02D13/0219 , F02D13/0249 , F02D13/0257 , F02D13/0265 , F02D13/0269 , F02D15/04 , F02D41/0007 , F02D41/10 , F02D2041/001 , Y02T10/142
摘要： An engine is equipped with a supercharger (exhaust turbocharger) which is rotationally driven by means of exhaust gas and in which an expansion ratio is settable greater than a compression ratio. The engine includes: an operation state determination unit that determines an operation state of the engine; a plurality of exhaust valves provided at a single cylinder; a variable exhaust valve timing mechanism that is capable of changing opening timing of at least one exhaust valve among the exhaust valves; and a controller that, when it is determined by the operation state determination unit that the engine is operated with low load and is acceleration time, transmits a command to the variable exhaust valve timing mechanism and advances the opening timing of the at least one exhaust valve relative to the opening timing of another exhaust valve. Thereby, supercharging response and the expansion ratio are maintained.
摘要翻译： 发动机配备有通过废气旋转驱动并且可膨胀比可设定为大于压缩比的增压器（排气涡轮增压器）。 发动机包括：运转状态判定单元，判定发动机的运转状态; 设置在单个气缸处的多个排气阀; 可变排气门正时机构，其能够改变排气门中的至少一个排气门的打开正时; 以及控制器，当由所述操作状态判定单元确定所述发动机以低负载操作并且是加速时间时，向所述可变排气门正时机构发送命令，并且使所述至少一个排气门的打开正时提前 相对于另一个排气阀的打开正时。 因此，保持增压响应和膨胀比。
-
公开(公告)号：US20140116395A1
公开(公告)日：2014-05-01
申请号：US14067492
申请日：2013-10-30
申请人： Scott BLACKSTOCK
发明人： Scott BLACKSTOCK
IPC分类号： F02B75/04
CPC分类号： F02B75/041 , F02B75/04 , F02D15/04 , F02D2700/03
摘要： A system and method for providing a variable compression ratio internal combustion engine is disclosed. The system can include a frame affixed to the engine crankcase and a complementary frame affixed to the block/cylinder head assembly. The system can further comprise an actuating system to enable the block/head assembly to be moved up and down with respect to the crankcase, varying the compression ratio of the engine. A number of mechanisms can be used to achieve this movement, including a rack and pinion, a hydraulic or pneumatic actuator, and a gear drive. The compression ratio can be varied continuously during use. The frames substantially limit movement of the engine components to the y-axis, thus reducing, or eliminating, unwanted movement and stresses in other directions.
摘要翻译： 公开了一种用于提供可变压缩比内燃机的系统和方法。 该系统可以包括固定到发动机曲轴箱的框架和固定到块/气缸盖组件的互补框架。 该系统还可以包括致动系统，以使块/头组件能相对于曲轴箱上下移动，改变发动机的压缩比。 可以使用许多机构来实现这一运动，包括齿条齿轮，液压或气动致动器和齿轮传动。 压缩比可以在使用期间连续变化。 这些框架基本上限制发动机部件到y轴的移动，从而减少或消除其他方向上的不必要的运动和应力。
-
公开(公告)号：US08651072B2
公开(公告)日：2014-02-18
申请号：US13641623
申请日：2010-05-24
申请人： Takashi Kawasaki
发明人： Takashi Kawasaki
IPC分类号： F02B75/04
CPC分类号： F02D15/04 , F02B75/041 , F02D13/0238 , F02D13/0269 , F02D41/221 , F02D2041/001 , F02D2700/03 , Y02T10/142 , Y02T10/40
摘要： In an internal combustion engine, a variable compression ratio mechanism which can change the mechanical compression ratio and a variable valve timing mechanism which can control a closing timing of an intake valve are provided. When the variable compression ratio mechanism breaks down, the mechanical compression ratio and the intake valve closing timing are made to change from a current operating point toward a low mechanical compression ratio side demanded operating point without entering the no-entry region.
摘要翻译： 在内燃机中，设置能够改变机械压缩比的可变压缩比机构和能够控制进气门的关闭正时的可变气门正时机构。 当可变压缩比机构故障时，使机械压缩比和进气门关闭正时从当前操作点向低机械压缩比侧要求操作点变化而不进入无进入区域。
-
公开(公告)号：US20120312014A1
公开(公告)日：2012-12-13
申请号：US13502676
申请日：2011-06-10
申请人： Daisuke Akihisa
发明人： Daisuke Akihisa
CPC分类号： F02D13/0238 , F01L1/3442 , F01L2001/34496 , F02B37/18 , F02B37/22 , F02B75/041 , F02D13/0269 , F02D15/04 , F02D41/0007 , F02D41/062 , F02D2041/001 , Y02T10/142 , Y02T10/144
摘要： A spark ignition-type internal combustion wherein a first mechanical compression ratio control and a second mechanical compression ratio control are alternatively carried out, the first mechanical compression ratio control makes the mechanical compression ratio in the low engine load side operation area higher than that in the high engine load side operation area to increase the expansion ratio in the low engine load side operation area, the second mechanical ratio control makes the expansion ratio in the low engine load side operation area lower than that in the low engine load side operation area made by the first mechanical compression ratio control and a boost pressure control increases the boost pressure like a step change when the engine load becomes a set engine load in the low engine load side operation area or higher, is provided. The set engine load of the boost pressure control when the second mechanical compression ratio control is carried out is set higher than that when the first mechanical compression ratio control is carried out.
摘要翻译： 一种火花点火型内燃，其中交替进行第一机械压缩比控制和第二机械压缩比控制，第一机械压缩比控制使低发动机负荷侧操作区域中的机械压缩比高于 高发动机负荷侧操作区域，以增加低发动机负荷侧操作区域的膨胀比，第二机械比例控制使低发动机负荷侧操作区域的膨胀比低于由低发动机负荷侧操作区域 提供第一机械压缩比控制和增压压力控制，如在低发动机负载侧操作区域或更高的发动机负荷变成设定的发动机负荷时，像增加阶梯变化那样增加增压压力。 当执行第二机械压缩比控制时，增压控制的设定发动机负荷被设定为高于执行第一机械压缩比控制时的设定发动机负荷。
-
-
-
-
-
-
-
-
-
搜索结果
166 条记录 (耗时 0.034 秒)
