Reversal firing resisting single-cylinder diesel engine and reversal firing resisting method for single-cylinder diesel engine

Abstract

The invention relates to a single cylinder diesel which can prevent the reverse ignition and comprises a camshaft main body (3'), an oil pump cam (8'), an inlet cam (9'), an exhaust cam (10'); the oil pump cam (8') arranged on the camshaft main body (3') drives a high pressure oil pump, the high-pressure fuel is injected into a cylinder through an oil injector; the inlet cam (9') arranged on the camshaft main body (3') drives an inlet jib body (4') to actuate an inlet pushrod (5'), and drive a valve rocker to drive an inlet valve to open or close in time; The exhaust cam (10') arranged on the camshaft main body (3') drives the exhaust jib body (7'), to actuate an exhaust push rod (6') and drive an exhaust valve rocker to drive the exhaust valve to open or close in time; the invention is characterized in that when the diesel engine reverses to the oil injection state, any of the inlet valve or exhaust valve of the engine is in the open state.

Description

Technical field: [0001] The invention newly relates to a single-cylinder diesel engine, in particular to a single-cylinder diesel engine with anti-reversal ignition and a method for preventing the single-cylinder diesel engine from reversing ignition. Background technique: [0002] The usual single-cylinder four-stroke diesel engine constitutes different strokes through the up and down movement direction of the piston in the cylinder and the start and stop positions (also called top dead center and bottom dead center). The four strokes form a working cycle, which is followed by The intake stroke, compression stroke, power stroke and exhaust stroke constitute a complete and continuous working cycle. By the forced transmission relationship of the diesel engine timing gear, when the piston is moving, the transmission chain consisting of the piston, piston pin, connecting rod, crankshaft, timing gear, camshaft, tappet, push rod, rocker arm, and valve makes the driving Valves and exha...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defect of the existing camshaft technology of single-cylinder diesel engine, when it is manually cranked, it is easy to hurt people due to reverse operation, we have improved the cam profile of the high-pressure oil pump and its matching with the phase angle of the intake and exhaust cams, that is, in the diesel engine When running in reverse, we improve the cam profile of the high-pressure oil pump. When the high-pressure oil pump rotates in reverse and sprays oil into the cylinder through the injector, we keep the intake valve or exhaust valve open.

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