A camshaft integrated valve lifter structure for an aero-piston engine cylinder

By adopting an integrated design of tappet bore and tappet body in the cylinder block of aero piston engines, the valve tappet sleeve and oil seal are eliminated. By using aluminum alloy and nano-diamond coating, the problems of sealing and numerous parts in traditional designs are solved, and the engine is made lighter and more wear-resistant.

CN224515272UActive Publication Date: 2026-07-17ANHUI HAERY AVIATION POWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANHUI HAERY AVIATION POWER CO LTD
Filing Date
2025-07-03
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing cylinder block structure of aviation piston engines, traditional tappets require independent valve timing, and the cylinder block and cylinder head need to be fitted in pairs, which makes it difficult to guarantee sealing and increases the number of engine system parts, making it impossible to simplify and reduce weight.

Method used

The design integrates the tappet bore and the tappet body, eliminating the need for the valve train sleeve and oil seal. It utilizes aluminum alloy material and nano-diamond coating to improve sealing and wear resistance, reduce the number of parts, and achieve lightweight design.

Benefits of technology

It eliminates the risk of oil leaks, reduces the number of engine system components, improves sealing and service life, and achieves lightweight and wear resistance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an aviation piston engine cylinder body integrated gas distribution tappet structure of camshaft relates to aviation piston engine cylinder body technical field, including first cylinder body and second cylinder body, first cylinder body and second cylinder body are opposite arrangement, first cylinder body inside is provided with first cylinder hole and second cylinder hole, second cylinder body inside is provided with third cylinder hole and fourth cylinder hole, and tappet hole is integrated on first cylinder body and second cylinder body, and the device has adopted the cooperation of tappet hole and tappet body, and eliminated the oil leakage risk of tappet body and first cylinder body and second cylinder body combination part from the source, in addition, cancel gas distribution tappet sleeve and corresponding oil seal, thereby reduced engine system spare parts, simplified engine system, and then realized the effect of lightweight high sealing.
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Claims

1. A camshaft-integrated valve tappet structure for an aircraft piston engine cylinder block, comprising a first cylinder block (1) and a second cylinder block (6), characterized in that: The first cylinder (1) and the second cylinder (6) are arranged opposite to each other. The first cylinder (1) is provided with a first cylinder bore (2) and a second cylinder bore (3), and the second cylinder (6) is provided with a third cylinder bore (7) and a fourth cylinder bore (8). The tappet hole (10) is integrated on the first cylinder (1) and the second cylinder (6).

2. An integrated camshaft-cylinder block porting mechanism structure for an aviation piston engine of a camshaft according to claim 1, characterized in that: Both the first cylinder block (1) and the second cylinder block (6) are made of aluminum alloy.

3. A camshaft integrated ported tappet structure for an aero-piston engine cylinder of a camshaft according to claim 1, characterized in that: The first cylinder (1) and the second cylinder (6) are both provided with intake tappet holes (4) and exhaust tappet holes (5) that are on the same axis as the tappet holes (10).

4. A camshaft integrated ported lifter structure for an aero-piston engine cylinder of a camshaft according to claim 1, characterized in that: A camshaft hole (9) is provided at the middle position inside the first cylinder (1) and the second cylinder (6).

5. A camshaft integrated ported tappet structure for an aero-piston engine cylinder of a camshaft according to claim 1, characterized by: The tappet hole (10) is provided with a tappet body (11).

6. A camshaft integrated ported lifter structure for an aero-piston engine cylinder block of a camshaft according to claim 1, characterized by: The inside of the tappet hole (10) is coated with nanodiamond.