Compound starting device and starting method for engine

Abstract

The invention discloses a compound starting device and a starting method for an engine. The compound starting device is characterized in that a hydraulic oil tank is connected with an input end of a hand pump, an output end of the hand pump is connected with an energy accumulator and an input end of a starting valve, and a first output end of the starting valve is connected with an input end of a hydraulic starting motor; the first output end of the starting valve is further connected with an input end of a hydraulic pump by a check valve, and the hydraulic pump is connected with the starting motor. A second output end of the starting valve is connected with an input end of a hydraulic motor for driving a charging power generator, and the hydraulic motor for driving the charging power generator is connected with the charging power generator. The starting method includes a starting motor starting mode and a hand pump starting mode. The compound starting device and the starting method have the advantages that the compound starting device is simple in structure and has diversified functions, the starting method is convenient and reliable, accordingly, the hydraulic starting motor can be driven in a hydraulic pump mode or the hand pump mode to rotate, and the engine can be started; the compound starting device has a main starting quick response function, manual operation for emergency purposes is taken into account, and accordingly the engine can be started even in extreme states.

Description

technical field [0001] The invention relates to an engine starting device, in particular to a device and method for ships, ocean platforms and other systems that require dead ship starting or multiple sets of starting systems, belonging to the technical field of engines. Background technique [0002] Ships, offshore platforms and other structures navigating on water or positioned for construction must be equipped with emergency diesel generator sets to ensure the safety of personnel and equipment on ships and offshore platforms. The emergency diesel generator set requires a dual engine start device. For example, the main start of the emergency diesel generator set requires 3 starts within 45 seconds, and the second start requires the start to be completed within 30 minutes (usually also requires 3 times). If the engine has two motor installation positions, two sets of starting devices can be installed, but with the improvement of emission requirements, the compactness of the...

AI Technical Summary

Problems solved by technology

If the engine has two motor installation positions, two sets of starting devices can be installed, but with the improvement of emission requirements, the compactness of the engine is getting higher and higher, and the development of EFI, only one motor can be installed on the engine. position, so that the second set of motors cannot be installed; and for electronic fuel injection machines or electronic speed control engines, both sets of starting devices are in a failure state when the ship is dead and there is no electricity

For the operation safety of ships and offshore platforms, the engine with this structure has serious safety hazards

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