CN2240618Y - Intake controller for two-stroke internal combustion engine - Google Patents

Abstract

The utility model relates to an intake controller for a two-stroke internal combustion engine, belonging to the intake device of an internal combustion engine. The utility model comprises a leaf spring valve, a spacing plate shaft, a reset spring, a push rod, a cam, a big and a small belt pulleys. The proportion of the diameters of the big and the small belt pulley is 3: 1, and the big belt pulley and the cam are driven to rotate by the small belt pulley. A push rod is jacked up, a spacing plate driven by the push rod is pried upwards, and the mixing gas is entered in a crankcase. Because the proportion of the diameters of the big and the small belt pulley is 3: 1, the crankshaft is rotated in 3 turns, and the spacing plate driven by the big belt pulley is upwards pried for once. One time of big air input and two times of small air input are provided. The maximum power and the fuel saving are simultaneously provided, and the problem of single function of the present internal combustion engine can be solved.

Description

The two-stroke internal-combustion engine Intaker controller

The utility model belongs to intake controller of internal combustion engine.

Present two-stroke internal-combustion engine Intaker controller, for example reed valve and piston valve all are that bent axle turns around, air inlet is once.It can only be that power maximum and fuel-economizing possess one that these two kinds of control valves make the function of internal-combustion engine, can not have concurrently simultaneously, and discharge amount of exhaust gas is big, and environment is polluted.

The purpose of this utility model provides a kind of two-stroke internal-combustion engine Intaker controller, and it can make internal-combustion engine have peak output and fuel-economizing two functions simultaneously, and discharging waste gas is few, reduces environmental pollution.

The purpose of this utility model is achieved in that

The two-stroke internal-combustion engine Intaker controller comprises reed valve, and the limiting board of its reed valve is two sections, and one section is the fixed plate of stationary spring, and another section is a limiting board, and it is shaped as

Shape, middle a slice slightly lever up one highly promptly with two of both sides not at grade, fixed plate and spring sheet, valve seat is fixed together, limiting board is fixed on the limiting board axle, limiting board axle one end is fixed in the axle sleeve, the other end stretches out outside the motor and is with screw thread, push rod is fixed on the end that screw thread is arranged on the limiting board axle, there is a dome push rod side, return spring one end is fixed on this dome, the other end is fixed on the spring fixed plate, there is a through hole push rod dome below, and a steel wire penetrating through hole and car spanner connect, and the other end of the push rod relative with return spring has a cam, cam and big belt pulley all are fixed on the camshaft, big belt pulley and small belt pulley connect by belt transmission, and small belt pulley is fixed on the bent axle of generator, and the diameter ratio of big small belt pulley is 3: 1, the convex portion of cam is 90 ° of angles, and position that cam is not protruding and spring sheet are the positions that matches.

Technique effect of the present utility model is as follows:

Produce 175 milliliters of motorcycle repacking the utility model cross-references with Czech:

	Adopt reed valve	Adopt piston valve	Adopt the utility model
				Hundred kilometers oil consumptions (L)	3.3	3.6	1.8
Speed per hour (km/h)	50	50	50
				Noise (dB)	80	82	70
The cylinder cooling fin temperature (℃)	Travel 10 kilometers and be higher than 100 ℃	Travel 10 kilometers and be higher than 100 ℃	Travel 10 kilometers 80 ℃
				Peak output (kw)	12.5	11	12.5
Waste discharge gas	Dense	Dense	Film and a small amount of

Provide embodiment of the utility model below in conjunction with accompanying drawing:

Fig. 1 is the utility model structural representation;

Fig. 2 is a reed valve part-structure schematic representation among Fig. 1.

[1]--reed valve, [2]--seal ring, [3]--ring washer, [4]--limiting board axle, [5]--return spring fixed plate, [6]--return spring, [7]--push rod, [8]--cam, [9]--camshaft, [10]--big belt pulley, [11]--small belt pulley, [12]--fixed plate, [13]--limiting board, [14]--spring sheet, [15]---valve seat.

175 milliliters of Czech produce on the motorcycle installs the utility model, and reed valve [1], its limiting board are two sections, and one section is the fixed plate [12] of stationary spring, and another section is limiting board [13], and it is shaped as Shape, middle a slice slightly levers up the height of 2mm, promptly with two of both sides not at grade, fixed plate [12] and spring sheet [14], valve seat [15] is fixed together, limiting board [13] is fixed on the limiting board axle [4], limiting board axle one end is fixed in the axle sleeve, the other end stretches out outside the motor and is with screw thread, push rod [7] is fixed on the end that screw thread is arranged on the limiting board axle [4], there is a dome push rod [7] side, return spring [6] one ends are fixed on this dome, the other end is fixed on the spring fixed plate [5], there is a through hole push rod [7] dome below, steel wire penetrating through hole and car spanner connect, the other end of the push rod [7] relative with return spring [6] has a cam [8], cam [8] and big belt pulley [10] all are fixed on the camshaft [9], big belt pulley [10] and small belt pulley [11] connect by belt transmission, small belt pulley [11] is fixed on the bent axle of generator, the diameter ratio of big small belt pulley is 3: 1, the convex portion of cam [9] is 90 ° of angles, and the not protruding position of cam just in time is the position that limiting board [13] and spring sheet [14] match.

When small belt pulley [11] changeed 1/2 circle, promptly piston was from the top dead center to the lower dead center, and big belt pulley [10] changes 1/6 circle, the convex portion top push rod [7] of cam [8], push rod [7] rotates, and drives limiting board axle [4] and rotates in the same way, and limiting board this moment [13] upwards levers up maximum position, when small belt pulley [11] continues to change 1/2 circle, be piston from the lower dead center to the top dead center, crankcase produces negative pressure, mixed steam is pushed spring sheet [14] open to the crankcase air inlet, at this moment big belt pulley [10] has changeed 1/6 circle, has promptly changeed 2/3 circle; Small belt pulley [11] changes 1/2 circle again, piston is from the top dead center to the lower dead center, the convex portion of cam [7] turns round, big belt pulley this moment [10] has turned over 1/2 circle, return spring [6] pushes up back original position with push rod [7], two of limiting board [13] both sides match with spring sheet [15], and middle a slice has upwards sled of 2mm; Small belt pulley [11] changes half-turn again, and piston produces negative pressure in the crankcase from the lower dead center to the top dead center, and mixed gas can only be pushed that piece spring sheet [14] 2mm in the middle of the limiting board [13] open, advances gas seldom in crankcase, and at this moment big belt pulley [10] has turned over 2/3 circle; Small belt pulley [11] changes 1/2 circle again, piston is from the top dead center to the lower dead center, big belt pulley [10] has turned over 5/6 circle, cam [7] also changes 5/6 circle, also do not turn over, push rod [7] is motionless, limiting board [13] is also motionless, and small belt pulley [11] changes 1/2 circle again, and piston is from the lower dead center to the top dead center, produce negative pressure in the crankcase, mixed gas can only be pushed that sheet 2mm in the spring sheet open, and the spring sheet closure is by generation malleation in the cylinder in a flash of descent of piston, and at this moment small belt pulley [11] has changeed 3 circles, big belt pulley [10] turns around, and promptly is to form the little the utility model Intaker controller of the big two circle air inlets of two-stroke internal-combustion engine one circle air inlet.

On the limiting board axle, produce a seal ring [2] and a ring washer [3], be used for fixing the location of limiting board.

Because the utility model adopts bent axle to change three circle circulation primary, realized that oil consumption is few, discharging waste gas also can make full use of existing fuel less and reach peak output, and easily damaged parts simple in structure, no is the desirable substitute products that the two-stroke motorcycle Intaker controller has fuel-economizing, function such as high-power.

Claims (2)

1. the two-stroke internal-combustion engine Intaker controller comprises reed valve, and the limiting board that it is characterized in that reed valve is two sections, and one section is the fixed plate of stationary spring, and another section is a limiting board, and it is shaped as

Middle a slice slightly levers up a height, promptly with two of both sides not at grade, fixed plate and spring sheet, valve seat is fixed together, limiting board is fixed on the limiting board axle, limiting board axle one end is fixed in the axle sleeve, the other end stretches out outside the motor and is with screw thread, push rod is fixed on the end that screw thread is arranged on the limiting board axle, there is a dome push rod side, return spring one end is fixed on this dome, and the other end is fixed on the spring fixed plate, and there is a through hole push rod dome below, one steel wire penetrating through hole and car spanner connect, the other end of the push rod relative with return spring has a cam, and cam and big belt pulley all are fixed on the camshaft, and big belt pulley and small belt pulley connect by belt transmission, small belt pulley is fixed on the bent axle of generator, the diameter ratio of big small belt pulley is 3: 1, and the convex portion of cam is 90 ° of angles, and position that cam is not protruding and spring sheet are the positions that matches.

2. two-stroke internal-combustion engine Intaker controller according to claim 1 is characterized in that: a seal ring and a back-up ring are arranged on the limiting board axle.

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