ROUGH SURFACE CASTING CYLINDER LINER

• Main Authors: JESUS ANTONIO MAGALLANES CASTANEDA, THOMAS J SMITH, STEFFEN RUDOLPH
• Format: Patent
• Language: English; Japanese
• Published: 02.11.2017
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CYLINDERS; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To improve contact characteristic of a casting cylinder liner for an internal combustion engine.SOLUTION: A surface of a cylinder liner 1 has a rough outer surface. The surface is covered by projections or protrusions 2 of various shapes and sizes, they are made by injecting a coating material to a casting die and casting the cylinder liner within the casting die. The protrusions 2 are substantially conical or needle-like shape, their bases are larger than their extremity ends. The protrusions 2 have a total cross section of 50 to 90% of an entire area of a cylindrical cutting surface under a measurement at a place by 0.2 mm apart from the cylindrical cutting surface and a total cross section area of 20 to 45% of an entire area of the cylindrical cutting surface under a measurement at a place by 0.4 mm apart from the cylindrical cutting surface.SELECTED DRAWING: Figure 1 【課題】鋳造する内燃機関用のシリンダライナの密着特性を改善する。【解決手段】シリンダライナ１の面は、粗い外面を有する。さまざまな形状及びサイズの突出又は突起２で覆われ、それらは、鋳型にコーティングを噴霧し、シリンダライナをその鋳型の中で鋳造することによって作成される。突起２は、概して円錐形又は針形であり、基部が先端より大きい。突起２は、円筒研削面から０．２mmにおける測定で円筒研削面の全面積の５０〜９０％の総断面積、円筒研削面から０．４mmにおける測定で円筒研削面の全面積の２０〜４５％の総断面積を有する。【選択図】図１