CYLINDER-PISTON GROUP OF INTERNAL COMBUSTION ENGINE Russian patent published in 2017 - IPC F02F3/00 F02F1/00 

Abstract RU 2637794 C1

FIELD: engines and pumps.

SUBSTANCE: cylinder-piston group of the internal combustion engine comprises a cylinder liner (1) and a piston (2) mounted therein with a hole (3) for the piston pin, which axis is perpendicular to the cylinder axis. The cylinder liner (1) and the piston (2) are made of a metal-ceramic matrix composite material based on nano-structure dispersed-strengthened chemically-sintered silicon carbide. The cylinder liner (1) has a gradient structure with reduction of silicon carbide content along the cylinder length. From the combustion chamber side, from the cylinder end, in the section which length is about 0.4 of cylinder height, the content of components, wt %: silicon carbide (SiC) - 75-93, silicon nitride (Si3N4) - 6.5-20, carbon - 0.5-5. On the remaining portion up to the end of the cylinder opposite the combustion chamber, the content of the components, wt %: silicon carbide (SiC) 47-75, silicon nitride (Si3N4) - 20-43, carbon - 5-10. The piston (2) is reinforced by not less than four core-free fibres (4) of silicon carbide (SiC) with thickness of 88-95 mcm, which are evenly arranged over the circumference and parallel to the hole (3) axis for the piston pin at a distance (1.3-1.7) diameter of the hole from the axis of the latter. The content in piston (2) components, wt %: silicon carbide (SiC) - 80-93, silicon nitride (Si3N4) - 18-6.5, carbon - 2-0.5.

EFFECT: elimination of piston rings structure by providing constant thermal gap between the cylinder liner and the piston, increased reliability due to elimination of cylinder liner and piston deformation in the working process.

5 dwg, 1 tbl

Similar patents RU2637794C1

Title Year Author Number
ENERGY-SAVING SLIDING BEARING 2011
  • Zubarev Gennadij Ivanovich
  • Klimov Denis Aleksandrovich
  • Marchukov Evgenij Juvenal'Evich
  • Nizovtsev Vladimir Evgen'Evich
  • Chuklinov Sergej Vladimirovich
RU2477395C1
PISTON OF INTERNAL COMBUSTION ENGINE 1997
  • Burakov Ju.V.
  • Mjagkov L.L.
  • Panin V.I.
  • Romanova V.S.
RU2116487C1
HOUSING OF ROTARY-PISTON INTERNAL COMBUSTION ENGINE 2020
  • Nizovtsev Vladimir Evgenevich
  • Klimov Denis Aleksandrovich
  • Stupenkov Mikhail Ivanovich
  • Bortnikov Andrej Dmitrievich
RU2738156C1
PISTON-CYLINDER GROUP 2016
  • Bezyukov Oleg Konstantinovich
  • Afanaseva Olga Vladimirovna
  • Pervukhin Dmitrij Anatolevich
RU2644434C1
NANOSTRUCTURED CERAMIC MATRIX COMPOSITE MATERIAL AND METHOD OF PRODUCING SAID MATERIAL 2009
  • Rumjantsev Vladimir Igorevich
  • Sapronov Roman Leonidovich
  • Mekh Vladimir Aleksandrovich
RU2415109C1
SLIDING BEARING WITH NANOSTRUCTURED ANTIFRICTION CERAMIC COATING 2011
  • Zubarev Gennadij Ivanovich
  • Klimov Denis Aleksandrovich
  • Marchukov Evgenij Juvenal'Evich
  • Nizovtsev Vladimir Evgen'Evich
  • Chuklinov Sergej Vladimirovich
RU2476736C1
METHOD FOR SPRAYING A GRADIENT COATING BASED ON A COMPOSITE POWDER OF THE Al:SiN:SiAlON SYSTEM 2021
  • Bobkova Tatyana Igorevna
  • Farmakovskij Boris Vladimirovich
  • Petrov Sergej Nikolaevich
  • Staritsyn Mikhail Vladimirovich
  • Lukyanova Natalya Alekseevna
  • Kashirina Anastasiya Anverovna
RU2785506C1
SINTERED REFRACTORY BLOCK BASED ON SILICON CARBIDE WITH SILICON NITRIDE BINDER 2005
  • Zhorzh Ehrik
  • Margjuehn Oliv'E
RU2395477C9
CONNECTING ROD-AND-PISTON GROUP 2004
  • Minasjan M.A.
RU2263804C1
METHOD FOR PRODUCTION OF CORUNDUM-MULLITE CERAMICS SCNALOX-MC 1993
  • Lisov M.F.
RU2054396C1

RU 2 637 794 C1

Authors

Nizovtsev Vladimir Evgenevich

Klimov Denis Aleksandrovich

Kornilov Aleksandr Ananevich

Dates

2017-12-07Published

2016-07-29Filed