Birotor planetary gear train horizontal two-cylinder engine gear train

By adopting a dual-rotor planetary wheel train in a horizontal two-cylinder engine, the problems of inertial force imbalance in the shaft system of the traditional engine and the main bearings with high loads are solved, and the self-balancing and structural simplification of the engine are achieved, reliability is improved and multi-cylinder output is supported.

CN120159608APending Publication Date: 2025-06-17CHINA NORTH ENGINE RES INST
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Patent Information

Application Number
CN202510385294.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-28
Publication Date
2025-06-17

AI Technical Summary

Technical Problem

The crank connecting rod mechanism of traditional horizontal two-cylinder engines has problems such as unbalanced inertia of the shaft system, high loads under main bearings, deterioration of lubrication environment and poor reliability.

Method used

The dual-rotor planetary gear train is adopted to cancel the crankshaft and bearing bushing, and the self-balancing and cancellation of torque through the rotor planetary gears and internal and external gears, simplifying the structure and improving reliability.

Benefits of technology

It realizes the self-balancing of the engine, simplifies the structure, improves reliability, reduces the vibration of the whole machine, makes the engine miniaturization possible, and supports the modular expansion of multi-cylinder output.

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Abstract

The invention provides a double-rotor planetary gear train horizontal two-cylinder engine gear train which comprises an engine body, a piston, a connecting rod, a torque output gear, a rotor planetary gear, a transmission gear, an inner gear, an outer gear, a starting gear, a cooling water cavity, a gear chain transmission box, an output shaft and an input shaft, an outer gear of the inner and outer gears is meshed with the torque output gear, the transmission gear and the starting gear, the inner gear is connected to the piston through a rotor planetary gear and a connecting rod in sequence, and an input shaft is fixedly sleeved with the starting gear and driven by an external driving mechanism; and an output shaft is fixedly sleeved in the torque output gear. According to the double-rotor planetary gear train horizontal two-cylinder engine gear train, the problems that a traditional two-cylinder engine shaft system is unbalanced, bearing bush lubrication fails and the like are solved, micro power units can be output in series, multi-cylinder output such as four-cylinder output and six-cylinder output can be achieved only by adjusting the ignition phase, and expansion of the micro power units can be achieved.
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