公开(公告)号：US3890069A

公开(公告)日：1975-06-17

申请号：US37686273

申请日：1973-07-05

Applicant: FORD MOTOR CO

Inventor： TELANG YESHWANT P ,  UY JAMES C

IPC: F02B55/08 ,  C23C4/06 ,  F01C19/00 ,  F02B55/00 ,  F04C1/08

CPC classification number: F02B55/00 ,  F01C19/005 ,  Y02T10/17 ,  Y10T29/49234

Abstract: A rotor housing for a rotary internal combustion engine is disclosed having a wear-resistant coating system characterized by high temperature hardness stability and controlled porosity to improve the lubricating characteristics of the surface-to-surface engagement with the rotary apex seals. The coating system comprises a self-fused composite of martensitic stainless steel powder and an equally hard powder consisting of a nickel-based alloy. Powder particle size is controlled to render a smoother machined surface and sub-surface porosity. An intermediate transition coating may be used consisting of a composition selected from nickel aluminide, arc sprayed nickel, molybdenum, all effective to operate as a bonding intermediate to a supporting aluminum structure. A method of producing the wear-resistant coating system for a rotor housing is disclosed, comprising preparation of an aluminum casting having a supporting epitrochoid end wall, machining a reference, embedment of thermally resistant plugs about certain openings in the end wall, removing a uniform layer of said casting end wall to a predetermined depth, soft grit blasting of the removed surface, coating of the margins about ports in the end wall with an anti-bond material flame spraying the entire end wall with a mixture of martensitic stainless steel and a nickelbased alloy, immersing said coated casting in oil for a predetermined period of time immediately after coating, and grinding off a portion of said coating to the depth of said reference.

Abstract translation: 公开了一种用于旋转内燃机的转子壳体，其具有耐磨涂层系统，其特征在于具有高温硬度稳定性和受控孔隙率，以改善与旋转三角形密封件的表面 - 表面接合的润滑特性。 涂层系统包括马氏体不锈钢粉末和由镍基合金组成的同等硬度的粉末的自熔复合材料。 控制粉末颗粒尺寸以使得更平滑的加工表面和次表面孔隙率。 可以使用中间过渡涂层，其由选自镍铝化合物，电弧喷涂镍，钼组成的组合物，均可有效地作为与支撑铝结构的结合中间体起作用。

公开(公告)号：US3909310A

公开(公告)日：1975-09-30

申请号：US50353274

申请日：1974-09-05

Applicant: FORD MOTOR CO

Inventor： UY JAMES C

IPC: B22F7/02 ,  C22C33/02 ,  F01C19/00 ,  C21D9/00 ,  F04C27/00

CPC classification number: C22C33/0292 ,  B22F7/02 ,  F01C19/005 ,  Y10S277/94

Abstract: A rotary internal combustion engine is disclosed having a rotor housing presenting an internal epitrochoid surface which is electrolytically coated with a composite of nickel and a carbide of silicon. A rotor piston is mounted for planetary movement within the rotor housing and carries a plurality of apex seal strips each comprised of a distinct wear-resistant portion and a distinct supporting portion. The wear-resistant portion is constituted of a sintered powder compact principally of iron and titanium carbide. The supporting portion is constituted of a sintered powder compact of high strength aluminum having a higher coefficient of thermal expansion than said wear-resistant portion. Both portions are mechanically keyed together to resist loads transverse to the strip and to make a mechanical joint as said portions differentially expand. The supporting portion is constituted of a material having a lower specific gravity than the wear-resistant portion; the wear-resistant portion has higher wear and antigalling properties as well as a lower dynamic coefficient of friction than the supporting portion.

Abstract translation: 公开了一种具有转子壳体的旋转内燃机，该转子壳体具有用镍和碳化硅的复合材料电解涂覆的内部外表面表面。 安装转子活塞用于在转子壳体内行星运动，并且承载多个顶点密封条，每个顶点密封条由不同的耐磨部分和不同的支撑部分组成。 耐磨部分由主要由铁和碳化钛组成的烧结粉末压块构成。 支撑部由具有比所述耐磨部分更高的热膨胀系数的高强度铝的烧结粉末压块构成。 两个部分机械地结合在一起以抵抗横向于带材的载荷，并且当所述部分差异地扩张时制造机械接头。 支撑部由比耐磨部分低的材料构成; 耐磨部分具有比支撑部分更高的磨损和抗除颤性能以及更低的动态摩擦系数。

公开(公告)号：US3918137A

公开(公告)日：1975-11-11

申请号：US46665574

申请日：1974-05-03

Applicant: FORD MOTOR CO

Inventor： TELANG YESHWANT P ,  UY JAMES C

IPC: B23P15/00 ,  F01C21/10 ,  B23P17/00

CPC classification number: F01C1/22 ,  B23P15/00 ,  F01C21/104 ,  F04C2230/91 ,  F04C2270/16 ,  Y10T29/49234 ,  Y10T29/4927 ,  Y10T29/49984 ,  Y10T29/49989

Abstract: An improved wear-resistant surface preparation is used on the inner side walls of the combustion chamber of a rotary piston engine. The improvement comprises deposition of two distinct but admixed metallic powders of generally equal hardness; one of the powders contains fluxing agents which enable the deposited powders to self-sinter if deposited in a semiplastic condition. The powders are deposited on a previously undercut cast iron side-housing. The resulting coating composition is characterized by minimum hardness value of Rc 30 at elevated operating temperatures of 400*F. The composition retains a stable hardness at elevated temperature levels up to 1100*F. The coating may have a porosity of 3-9%, but particle size is controlled to limit the porosity to 5% which is compatible with lubricating requirements of a rotary engine. The coating composition is deposited across the entire area circumscribed by the path of the outer most side point of the apex seals carried by the rotary piston; the path is substantially commensurate or approaches the entire shape of the epitrochoid chamber. The coating is compatible with the composition of the rotor side seals, oil seals and corner seals bearing thereagainst. The rotor side seals are comprised of cast iron, the oil seals are cast iron coated with limited chromium, the corner seals are prepared from cast iron, and the apex seals are strips of metal coated with an alloy of iron and titanium carbide with graphite. A method is disclosed comprising: (1) machining a cast side housing structure to a depth sufficient to accommodate a slightly oversized finish coating. The cast structure is undercut, grit blasted and preheated to 200*F., (2) a coating of admixed martensitic stainless steel and an equally hard nickel-based alloy is flame sprayed upon the machined area including approximately three-eights of an inch margin beyond the undercut area, the spraying being conducted by rotating the surface to be sprayed along with radial and rotative movement of the spray gun arranged to direct the spray perpendicular to the surface, (3) soaking the flame sprayed coating immediately after deposition with oil, and (4) grinding the surface finish to a predetermined reference thickness.

Abstract translation: 在旋转活塞式发动机的燃烧室的内侧壁上使用改进的耐磨表面处理。 改进包括沉积两种不同但混合的金属粉末，其硬度大致相同; 粉末中的一种包含助熔剂，其能够使沉积的粉末如果以半成品状态沉积而自烧结。 粉末沉积在先前底切的铸铁侧壳上。 所得涂料组合物的特征在于在400°F的升高的操作温度下Rc 30的最小硬度值。该组合物在高达1100°F的高温水平下保持稳定的硬度。涂层可具有3-9％的孔隙率， 但是控制了颗粒尺寸以将孔隙率限制为与旋转发动机的润滑要求相容的5％。 涂层组合物沉积在由旋转活塞承载的顶点密封件的最外侧点的路径外围的整个区域上; 该路径基本相当或接近该外旋体室的整个形状。 涂层与转子侧密封件，油封和角接头密封件的组成相兼容。 转子侧密封件由铸铁组成，油封为镀有限定铬的铸铁，角钢密封件由铸铁制成，顶端密封件为镀有铁和碳化钛与石墨合金的金属带。

公开(公告)号：US3888606A

公开(公告)日：1975-06-10

申请号：US42853073

申请日：1973-12-26

Applicant: FORD MOTOR CO

Inventor： UY JAMES C

IPC: F02B53/00 ,  F01C1/22 ,  F01C21/00 ,  F02B55/02 ,  F02B55/14 ,  F02B77/02

CPC classification number: F01C1/22 ,  F02B53/00 ,  F02B77/02 ,  F02B2053/005 ,  F05C2201/0442 ,  Y02T10/17

Abstract: A rotary internal combustion engine and particularly an improved rotor construction for such engine and method of making is disclosed. A coating system is applied at least to the flank surfaces of the rotor which face the variable volume combustion chambers of the engine, the system serving to reduce heat flow to the oil lubrication system within the rotor and to quench heat build-up on the above surfaces to prevent pre-ignition. The engine is permitted to run at a somewhat higher operating temperature resulting in increased efficiency, better fuel comsumption and reduction of emissions.

Abstract translation: 公开了一种旋转内燃机，特别是用于这种发动机的改进的转子结构和制造方法。 涂覆系统至少施加到转子的面向发动机的可变体积燃烧室的侧面，该系统用于减少转子内的油润滑系统的热流并且在上述情况下骤冷发热 表面防止预燃。 发动机允许在稍高的运行温度下运行，从而提高效率，更好的燃料消耗和减少排放。

公开(公告)号：US3888746A

公开(公告)日：1975-06-10

申请号：US43097474

申请日：1974-01-04

Applicant: FORD MOTOR CO

Inventor： UY JAMES C ,  TELANG YESHWANT P

IPC: F02B55/08 ,  C25D5/44 ,  F01C21/10 ,  C23B5/62 ,  C23B5/06

CPC classification number: F01C21/106 ,  C25D5/44 ,  Y10T29/49234

Abstract: A method (and resulting product) is disclosed for making rotor housings useful in a rotary internal combustion engine. The housing is preferably sand cast; the internal epitrochoid surface is flame-spray coated with a thin layer of nickel-aluminide, flame-spray coated with a thicker layer of plain carbon steel, and then plated with chromium. The resulting casting-coating composite provides enhanced wearability, increased dimensional stability, and reduced internal stress of the coatings.

公开(公告)号：US3860367A

公开(公告)日：1975-01-14

申请号：US39137673

申请日：1973-08-24

Applicant: FORD MOTOR CO

Inventor： TELANG YESHWANT P ,  UY JAMES C

IPC: F02B55/08 ,  F01C21/10

CPC classification number: F02B55/08

Abstract: A side wall coating system is disclosed for use in a rotary internal combustion engine having a narrow chamber bounded by a pair of flat side walls and an epitrochoidally-shaped end wall joining the side walls. A rotor is mounted for planetary movement in the chamber and in close spacing with each of said side walls, the rotor carries annular seals sliding against said side walls to define a shifting oil chamber in the spacing between the rotor and each of said side walls. The coating system comprises a selffused particle coating across the entire area of each of said side walls and is comprised of an admixture of stainless steel and nickel-based alloy powders of generally equal hardness. A resin is impregnated in said coating effective to close the pores substantially below the surface of said coating but the pores adjacent the surface are devoid of such resin as a result of decomposition under engine operating conditions. The decomposition of the resin insures limited porosity for retention of a controlled amount of oil to facilitate an oil film between the scraping seals and the side housing wall and also assure a deposit of carbon acting as a dry lubricant to further facilitate the metallic contact therebetween.

Abstract translation: 公开了一种用于旋转内燃机的侧壁涂覆系统，其具有由一对平坦侧壁和连接侧壁的外旋形端壁限定的狭窄室。 转子安装成用于在腔室中行星运动并且与每个所述侧壁紧密地间隔，转子承载滑动抵靠所述侧壁的环形密封件，以在转子和每个所述侧壁之间的间隔中限定换档油室。 涂层系统包括穿过每个所述侧壁的整个区域的自熔融颗粒涂层，并且由不锈钢和基本相等硬度的镍基合金粉末的混合物组成。 在所述涂层中浸渍树脂，其有效地封闭基本上在所述涂层表面下方的孔，但邻近表面的孔没有由于在发动机操作条件下的分解而导致的这种树脂。 树脂的分解确保有限的孔隙率以保持受控量的油，以便于刮擦密封件和侧壳体壁之间的油膜，并且还确保作为干润滑剂的碳沉积物以进一步促进其间的金属接触。