-
公开(公告)号：EP0775810B1
公开(公告)日：2001-06-06
申请号：EP95308413.4
申请日：1995-11-23
申请人： Isuzu Motors Limited
发明人： Matsuoka, Hiroshi , Kawamura, Hideo
CPC分类号： F02B23/0672 , F02B23/0627 , F02B23/0633 , F02B23/0636 , F02B23/0675 , F02B2023/0609 , F02B2023/0612 , F02B2275/14 , F02F7/0087 , F05C2201/046 , F05C2251/042 , F05C2253/16 , Y02T10/123 , Y02T10/125
-
公开(公告)号：EP0365185B1
公开(公告)日：1993-03-17
申请号：EP89310264.0
申请日：1989-10-06
申请人： Isuzu Motors Limited
发明人： Matsuoka, Hiroshi
IPC分类号： F02M47/02
CPC分类号： F02M59/466 , F02M47/02
-
公开(公告)号：EP0420641A1
公开(公告)日：1991-04-03
申请号：EP90310594.8
申请日：1990-09-27
申请人： Isuzu Motors Limited
发明人： Matsuoka, Hiroshi
CPC分类号： F02B19/08 , F02B7/04 , F02B19/165 , F02B77/02 , Y02T10/125
摘要： The heat-insulating engine with swirl chamber of this invention injects a fuel at a low pressure along the inner wall surface (21) of swirl chambers (4) having a heat-insulating structure by subsidiary nozzles (2) equipped with an accumulation chamber for accumulating temporarily the fuel from a fuel pressurization pump (22,28) and having a needle valve opened and closed electrically, from the second half of an intake stroke to a compression stroke, and then injects mainly the fuel from a fuel injection pump (23) by main nozzles (3), into the swirl chambers (4) from the second half of the compression stroke to an expansion stroke. Atomization of the fuel from the subsidiary nozzles (2) may be to such an extent that the fuel merely attaches to the wall surface (21); hence, the subsidiary nozzles (2) can be of accumulation type low pressure injection type. Accordingly, the fuel pressurization pump (22,28) itself can be made compact in size and light in weight and the cost of production can be reduced. The fuel from the subsidiary nozzles (2) is injected to the wall surface (21) of the swirl chambers (4) in the contact state so as to deprive the wall surface (21) of the heat and thus to recover the heat. Main injection is effected following the subsidiary injection and a rich mixture is generated inside the swirl chambers (4) so as to restrict the generation of NOX and to improve cycle efficiency. Furthermore, it is possible to prevent a lean mixture from diffusing into cylinders (14). since the fuel of subsidiary injection is caused to stay inside the swirl chambers (4), degradation of hydrocarbon components can be reduced.
摘要翻译： 本发明的具有涡流室的隔热发动机沿着具有隔热结构的涡旋室（4）的内壁面（21）沿低压喷射燃料，辅助喷嘴（2）配备有用于 从燃料加压泵（22,28）中临时累积燃料，并且从进气冲程的后半部到打开冲程开启和关闭针阀，然后主要从燃料喷射泵（23 ）通过主喷嘴（3）从压缩行程的后半部到膨胀冲程进入涡流室（4）。 来自辅助喷嘴（2）的燃料的雾化可以是这样的程度，即燃料仅附着在壁表面（21）上; 因此，辅助喷嘴（2）可以是积聚型低压喷射型。 因此，燃料加压泵（22,28）本身可以制造得紧凑，重量轻，并且可以降低生产成本。 来自辅助喷嘴（2）的燃料在接触状态下被喷射到涡流室（4）的壁面（21），从而剥离壁面（21），从而回收热量。 主喷射在辅助喷射之后进行，并且在涡流室（4）内部产生丰富的混合物，以限制NOX的产生并提高循环效率。 此外，可以防止贫混合物扩散到气缸（14）中。 由于辅助喷射燃料停留在涡流室（4）内，所以可以降低烃成分的降解。
-
公开(公告)号：EP0420456A1
公开(公告)日：1991-04-03
申请号：EP90310051.9
申请日：1990-09-13
申请人： Isuzu Motors Limited
发明人： Matsuoka, Hiroshi
CPC分类号： F02B19/08 , F02B7/04 , F02B19/165 , F02F7/0087 , Y02T10/125
摘要： In a heat-insulating swirl chamber engine of this invention, a fuel is injected subsidiarily from subsidiary nozzles (2) along the inner wall surfaces (16) of swirl chambers (4) of a heat-insulating structure from the second half of an intake stroke to the first half of a compression stroke, so that a lean mixture formed in the swirl chambers (4) does not diffuse into cylinders (14), deterioration of hydrocarbon components can be prevented and moreover, since the fuel comes into contact with the wall surfaces (16) of the swirl chamber, heat energy can be recovered from the wall surfaces (16). Next, the fuel is mainly injected from main nozzles (3) into the swirl chambers (4) from the second half of the compression stroke to the first half of an expansion stroke, so that the inside of the swirl chambers (4) becomes fuel-rich due to the lean mixture formed in advance in the swirl chambers (4) and the fuel by the main injection, combustion is effected in the fuel-rich state to restrict the generation of NOx and moreover, cycle efficiency can be improved because the main combustion period is shortened.
摘要翻译： 在本发明的绝热涡流室发动机中，燃料从辅助喷嘴（2）沿着绝热结构的旋转室（4）的内壁表面（16）辅助地从进气口的后半部分 冲程到压缩冲程的前半部分，使得形成在涡流室（4）中的贫混合物不会扩散到气缸（14）中，可以防止烃组分的劣化，此外，由于燃料与 涡流室的壁面（16）可以从壁面（16）回收热能。 接下来，燃料主要从主喷嘴（3）从压缩行程的后半部分向膨胀冲程的前半部分喷射到涡流室（4）中，使得涡流室（4）的内部变成燃料 由于在涡流室（4）中预先形成的稀混合物和通过主喷射而形成燃料，所以在富燃状态下进行燃烧以限制NOx的产生，此外，由于可以提高循环效率 主燃烧时间缩短。
-
5.发明公开
公开(公告)号：EP0299679A2
公开(公告)日：1989-01-18
申请号：EP88306203.6
申请日：1988-07-07
申请人： Isuzu Motors Limited
发明人： Kawamura, Hideo , Matsuoka, Hiroshi
CPC分类号： F01P9/00 , F01P3/02 , F02B3/06 , F02B23/0696 , F02B77/11 , F02B2023/0612 , F02B2075/1816 , F02B2275/16 , F02F1/02 , F02F1/38 , F02F7/0007 , F02F2001/247 , Y02T10/123 , Y02T10/125
摘要： The upper parts of the cylinder liners and the cylinder head are formed integral in one piece, and a water jacket is provided around the outer peripheries of the upper parts of the cylinder liners, with no water jacket provided to the cylinder body. This eliminates the use of the core for the water jacket in molding the cylinder body, which in turn reduces the engine weight, brings about a significant cost reduction and makes machining operations easy. Because the piston head is made of a heat insulating material and a water jacket is not provided to the cylinder body, the heat is prevented from flowing down to the cylinder liners. Furthermore, the cylinder liners are made of a ceramic material to improve an anti-galling characteristic during sliding motions at high temperatures. Also, since the water jacket is provided only to the cylinder head, the water jacket can be made simple and small in structure, reducing the cooling water flow resistance. This in turn permits the use of a small motor-powered water pump that can be controlled independently of the engine conditions. Moreover, since the cylinder body has no water jacket, there is a greater freedom in designing the cylinder body, which makes it possible to form reinforcement ribs on the cylinder body to increase its rigidity and thereby reduce vibrations and noise.
摘要翻译： 气缸套和气缸盖的上部一体形成一体，并且在气缸套的上部的外周周围设置水套，没有向气缸体提供水套。 这消除了在模制气缸体时使用水套的芯部，这又降低了发动机重量，导致显着的成本降低并且使加工操作变得容易。 由于活塞头由绝热材料制成，并且水套不设置到缸体，所以防止了热量向下流动到气缸套。 此外，气缸套由陶瓷材料制成，以在高温下的滑动运动期间提高抗磨损特性。 此外，由于水套仅设置在气缸盖上，所以可以使水套的结构简单，结构小，降低了冷却水的流通阻力。 这又允许使用可以独立于发动机条件进行控制的小型电动水泵。 此外，由于缸体没有水套，因此在缸体的设计上具有更大的自由度，这使得可以在缸体上形成加强肋，以增加其刚性，从而减少振动和噪声。
-
公开(公告)号：EP0294091A2
公开(公告)日：1988-12-07
申请号：EP88304741.7
申请日：1988-05-25
申请人： Isuzu Motors Limited
发明人： Kawamura, Hideo , Matsuoka, Hiroshi
CPC分类号： F02F3/0023 , F02B77/11 , F02F3/003 , F02F3/12 , F05C2201/021 , F05C2201/0448 , F05C2201/046 , F05C2251/042 , F05C2253/16
摘要： The heat-insulating piston structure (10) according to the present invention is formed by fixing a piston head (4), which consists of a material the coefficient of thermal expansion of which is substantially equal to that of a ceramic material, to a piston skirt (2), and setting a thin, flat plate (5) portion of a ceramic material on the whole of the flat surface of the piston head which is on the side of a combustion chamber via a heat-insulating member. Accordingly, the piston (10) can be formed so that it has excellent heat-insulating characteristics and high thermal resistance, deformation resistance and corrosion resistance. Especially, the thin plate portion of a ceramic material (5), which is exposed to a combustion gas, can be formed to the smallest possible thickness to reduce the thermal capacity thereof greatly. Therefore, the temperature of the wall of the combustion chamber varies easily with that of the combustion gas (in other words, the amplitude of the temperature of this wall becomes large). Consequently, a difference between the temperature of the thin plate portion of a ceramic material and those of the gases (combustion gas and suction air) becomes small momentarily, so that the heat transfer rate of the thin plate portion decreases. This causes a decrease in the quantity of heat which the suction air receives from the wall surface. As a result, the suction air smoothly enters the combustion chamber without being expanded therein. This enables the suction efficiency and cycle efficiency to be improved.
摘要翻译： 根据本发明的隔热活塞结构（10）通过将活塞头（4）固定到活塞头（4），活塞头（4）由热膨胀系数基本上等于陶瓷材料的材料组成， 裙部（2），并且通过绝热构件在燃烧室侧面上的活塞头的整个平坦表面上设置薄的平板（5）部分的陶瓷材料。 因此，活塞（10）可以形成为具有优异的隔热特性和高耐热性，耐变形性和耐腐蚀性。 特别地，暴露于燃烧气体的陶瓷材料（5）的薄板部分可以形成为尽可能小的厚度，以大大降低其热容量。 因此，燃烧室壁的温度容易与燃烧气体的温度变化（换句话说，该壁的温度振幅变大）。 因此，陶瓷材料的薄板部分的温度与气体（燃烧气体和吸入空气）的温度之间的差异变小，使得薄板部分的传热速率降低。 这导致吸入空气从壁表面接收的热量减少。 结果，吸入空气平稳地进入燃烧室而不会在其中膨胀。 这样可以提高吸入效率和循环效率。
-
公开(公告)号：EP0420641B1
公开(公告)日：1993-11-24
申请号：EP90310594.8
申请日：1990-09-27
申请人： Isuzu Motors Limited
发明人： Matsuoka, Hiroshi
CPC分类号： F02B19/08 , F02B7/04 , F02B19/165 , F02B77/02 , Y02T10/125
-
公开(公告)号：EP0294092B1
公开(公告)日：1992-07-29
申请号：EP88304742.5
申请日：1988-05-25
申请人： Isuzu Motors Limited
发明人： Kawamura, Hideo , Matsuoka, Hiroshi
CPC分类号： F02F3/003 , F02B3/06 , F02B77/11 , F02F3/12 , F05C2251/042 , F05C2251/048 , F05C2253/16
-
公开(公告)号：EP0294092A3
公开(公告)日：1989-10-25
申请号：EP88304742.5
申请日：1988-05-25
申请人： Isuzu Motors Limited
发明人： Kawamura, Hideo , Matsuoka, Hiroshi
CPC分类号： F02F3/003 , F02B3/06 , F02B77/11 , F02F3/12 , F05C2251/042 , F05C2251/048 , F05C2253/16
摘要： In order to improve the suction efficiency and the cycle efficiency, a heat-insulating engine structure (10) of the invention has a planar and thin-walled piston head surface portion (4) of a ceramics material to be exposed to combustion gases. A combustion chamber (15) is formed not on the side of the piston head but on the side of a cylinder head. Namely, the piston head is defined by the cooperation of a cylinder head bottom wall portion (26) having a lowered central portion and a raised outer peripheral portion (18) and a cylinder liner upper portion (28) including an upper tubular part of a substantially square cross-section and a lower cylindrical part. The cylinder head bottom wall portion has an inclined surface radially upwardly extending from the central portion to the outer peripheral portion. Intake and exhaust valves (21, 27) are associated with valve seats formed in the inclined surface. A fuel injection nozzle (25) is disposed substantially centrally of the cylinder head bottom wall portion. The sides of the square tubular part are operative to agitate a swirl to facilitate uniform mixture of fuel and air thereby assuring that the fuel and air are mixed instantaneously in a zone adjacent to the top dead center of the piston.
-
公开(公告)号：EP0294091A3
公开(公告)日：1989-10-25
申请号：EP88304741.7
申请日：1988-05-25
申请人： Isuzu Motors Limited
发明人： Kawamura, Hideo , Matsuoka, Hiroshi
CPC分类号： F02F3/0023 , F02B77/11 , F02F3/003 , F02F3/12 , F05C2201/021 , F05C2201/0448 , F05C2201/046 , F05C2251/042 , F05C2253/16
摘要： The heat-insulating piston structure (10) according to the present invention is formed by fixing a piston head (4), which consists of a material the coefficient of thermal expansion of which is substantially equal to that of a ceramic material, to a piston skirt (2), and setting a thin, flat plate (5) portion of a ceramic material on the whole of the flat surface of the piston head which is on the side of a combustion chamber via a heat-insulating member. Accordingly, the piston (10) can be formed so that it has excellent heat-insulating characteristics and high thermal resistance, deformation resistance and corrosion resistance. Especially, the thin plate portion of a ceramic material (5), which is exposed to a combustion gas, can be formed to the smallest possible thickness to reduce the thermal capacity thereof greatly. Therefore, the temperature of the wall of the combustion chamber varies easily with that of the combustion gas (in other words, the amplitude of the temperature of this wall becomes large). Consequently, a difference between the temperature of the thin plate portion of a ceramic material and those of the gases (combustion gas and suction air) becomes small momentarily, so that the heat transfer rate of the thin plate portion decreases. This causes a decrease in the quantity of heat which the suction air receives from the wall surface. As a result, the suction air smoothly enters the combustion chamber without being expanded therein. This enables the suction efficiency and cycle efficiency to be improved.
-
-
-
-
-
-
-
-
-
搜索结果
19 条记录 (耗时 0.012 秒)
