Driving mechanism for engine brake

Abstract

The invention relates to a driving mechanism for engine brake, which consists of an exhaust valve control mechanism, wherein the exhaust valve control mechanism consists of a driving force input mechanism and a driving force transmission mechanism, the driving force input mechanism is connected with the driving force transmission mechanism, an exhaust valve contact end is arranged in the driving force transmission mechanism, and is connected with a station control piston which is arranged in the driving force transmission mechanism, and the exhaust valve contact end is provided with a first station and a second station. The driving mechanism utilizes the engine power for driving a control valve rod of an exhaust valve, drives the control valve rod of the engine exhaust valve without usinga hydraulic device with high oil pressure, can be integrated with the engine, can reduce the size and the weight, reduces the brake reaction time, and eliminates high oil pressure and the leakage, deformation and load fluctuation caused by high oil pressure, and the brake valve rise is not influenced by the oil temperature, the oil pressure and the air content and can be designed to present a smaller size, so the requirement on an engine piston and the air valve gap can be reduced.

Description

Technical field: [0001] The invention relates to the mechanical field, in particular to a braking device for an engine, in particular to a driving mechanism for engine braking. Background technique: [0002] In the prior art, the method of using the internal combustion engine as a braking means is well known, and only the engine needs to be temporarily converted into a compressor. This conversion cuts off the fuel and opens the exhaust valve at or near the end of the engine piston compression stroke, allowing the compressed gas (air during braking) to be released. The energy absorbed by the engine during the compression stroke cannot be used The subsequent expansion stroke returns to the engine piston, but is dissipated through the engine's exhaust and cooling system. The end result is effective engine braking that slows the vehicle. [0003] A precedent for an engine brake is disclosed in US Patent No. 3,220,392 to Cummins, according to which an engine braking system has ...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a driving mechanism for engine braking, said driving mechanism for engine braking will solve the problem that the overhead mode of the engine braking system in the prior art increases the height of the engine and the The technical problem of manufacturing cost, at the same time, it is necessary to solve the technical problem of large inertia and slow response of the braking system existing in the hydraulically driven engine brake

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