Lighting device in engine cylinder

Abstract

The embodiment of the invention provides a lighting device in an engine cylinder. The lighting device comprises a lamp pole, a heat insulation sleeve, a lamp holder and a water circulation cooling device. The lamp pole is provided with an inner shaft hole, and the front end of the lamp pole is connected with the rear end of the heat insulation sleeve; an optical window is arranged at the front end of the heat insulation sleeve; the lamp holder is arranged in the heat insulation sleeve and faces the optical window; and the water circulation cooling device is arranged in the inner shaft hole of the lamp pole, and the front end of the water circulation cooling device is connected with the rear end of the lamp holder. The lamp holder can extend into the engine cylinder by means of the lamp pole, so that the interior of the engine cylinder is illuminated from the interior, sufficient illumination brightness can be provided, meanwhile, the problem of serious light reflection of an external illumination system is solved, and the image shooting quality is improved. In addition, heat generated by the lamp holder is absorbed through the water circulation cooling device for effective heat dissipation, so that the service life of the lighting device can be prolonged, and meanwhile, preignition and detonation of the engine caused by heat accumulation are avoided; and the use requirements of all working conditions of the engine are met.

Description

technical field [0001] The embodiment of the present application relates to the field of engine technology, and in particular to an engine in-cylinder lighting device. Background technique [0002] Engine visualization technology can intuitively reflect the movement process, mixture formation process and combustion state of the components in the engine cylinder, and has irreplaceable advantages in engine development and fault diagnosis. [0003] At present, the engine visualization structure is mainly divided into the following two categories: the first category is to configure a transparent cylinder liner made of quartz glass, and install an LED light source and a camera outside the cylinder; the second category is to punch a hole in the cylinder head and configure an endoscopic lens, and An optical fiber lighting device composed of a light source, an optical fiber and a glass light head is arranged. The glass light head is arranged in the tank, and the bright light emitted...

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Problems solved by technology

[0004] In view of this, one of the technical problems solved by the embodiments of the present invention is to provide an engine in-cylinder lighting device to overcome the defects in the prior art that the external LED lighting of the engine is seriously reflected and affects the quality of shooting, and the endoscope The optical fiber lighting system has insufficient brightness, short service life, and easy to cause early ignition and knocking defects at medium and high loads

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