CN2787860Y

CN2787860Y - Mixed gas pre-heating type single-cylinder small-sized general gasoline engine

Info

Publication number: CN2787860Y
Application number: CN 200420122548
Authority: CN
Inventors: 陈恳
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-14
Filing date: 2004-12-14
Publication date: 2006-06-14
Anticipated expiration: 2014-12-14

Abstract

The utility model provides a mixed gas preheating type single-cylinder small-sized general gasoline engine which is composed of a silencer, an air inlet preheating conduit pipe, a carburetor, a heat conducting branch pipe, a cylinder head, etc., wherein one end of the air inlet preheating conduit pipe is connected with an air inlet of the cylinder head through a threaded stud of the cylinder head and the other end is connected with an air throttle of the carburetor through the threaded stud of the cylinder head. Contact surfaces at both ends of the air inlet preheating conduit pipe are respectively provided with a sealing washer. An air inlet port of the heat conducting branch pipe is communicated with an air exhaust bent pipe of the silencer. An air exhaust port of the heat conducting branch pipe is appressed with the outer wall of the air inlet preheating conduit pipe. Partial high temperature gas which flows through the inner part of the silencer heats the wall of the air inlet preheating conduit pipe through the heat conducting branch pipe connected with the silencer, which can obtain heat energy required by the air inlet preheating conduit pipe. Or temperature generated by the cylinder head is directly passed to the air inlet preheating conduit pipe, which can also obtain heat energy required by the air inlet preheating conduit pipe. The utility model has the advantages of small volume, simple and reliable heat acquisition mode, strong universality and interchangeability of the complete machine, etc.

Description

Charge heating formula single cylinder Small Universal petrol engine

Technical field

The utility model belongs to single cylinder Small Universal petrol engine, particularly relates to a kind of charge heating formula single cylinder Small Universal petrol engine.

Background technique

Common single cylinder Small Universal petrol engine of the prior art, inflammable mixture is provided by Carburetor usually, being gasoline is broken up and is formed vaporific particle by promptly the flowed through high-speed air flow of trunnion of Carburetor foam tube ejection back, vaporific particle and air mixing directly enter the gasoline engine combustion chamber burning behind formation oil/gas mixed gas.The single cylinder Small Universal petrol engine of this class formation is because oil/gas mixed gas self temperature is not high, vaporific olesome can not well atomize with air, have the following disadvantages in the course of the work: 1) oil/gas mixed gas mobile variation in entering the passage of firing chamber, the olesome of failing to atomize fully is attracted on the Carburetor conduit wall, has increased the consumption of fuel oil; 2) can not perfect combustion without the olesome of atomizing fully in the firing chamber, the heat that discharges during fuel combustion reduces, and the thermal efficiency reduces, thereby influences petrolic power output; 3) do not wash away oil film remaining on the cylinder wall after the fuel of atomizing enters cylinder with liquid olesome, the cylinder wall lubricant film is destroyed, the lubricating condition between cylinder wall and the piston ring worsens, and wear extent sharply increases; 4) liquid olesome enters behind the firing chamber propagating flame at a terrific speed, thereby produces the shock wave of band explosive nature thereof, makes the output of petrol engine rotating speed unstable; 5) do not have the olesome of fully atomizing to be brought into combustion chambers burn and to produce harmful matters such as a large amount of HC compounds and CO, increased the discharging of pollutant, caused pollution surrounding environment.

Summary of the invention

The purpose of this utility model is a kind of charge heating formula single cylinder Small Universal petrol engine that provides at the deficiencies in the prior art, it can effectively improve the petrol engine fuel oil atomization quality, improve burning, control blowdown and improve the petrol engine performance.

The technical solution of the utility model is achieved in that charge heating formula single cylinder Small Universal petrol engine, it comprises sky filter, flywheel, silencing apparatus, charge heating conduit, spark plug, Carburetor, casing, bent axle, connecting rod, piston and cylinder head, one end of charge heating conduit is connected with the suction port of cylinder head by the stud bolt of cylinder head, the other end of charge heating conduit is connected with the closure of Carburetor by the stud bolt of cylinder head, and the surface of contact at charge heating conduit two ends is provided with gasket seal.

Further improve and be: it also comprises the heat conduction manifold, and the air inlet port of heat conduction manifold communicates with the exhaust elbow of silencing apparatus, and the exhaust port of heat conduction manifold is close to the outer wall of charge heating conduit.

The utility model charge heating formula single cylinder Small Universal petrol engine is the stroke piston combustion engine that a kind of electrical spark is lighted, when petrol engine descends in working order, the part high-temperature gas that the required heat energy of charge heating conduit (5) both can utilize silencing apparatus (3) inside to flow through, by the heat conduction manifold (8) that is connected with silencing apparatus (3) charge heating conduit (5) wall is heated, charge heating conduit (5) temperature rises and makes internal mix be so incensed that the heat that preheating is required; The temperature that also can utilize cylinder head (13) to produce is directly passed to charge heating conduit (5).

Description of drawings

Fig. 1 is a charge heating formula single cylinder Small Universal petrol engine external structure schematic representation, and wherein (1) is that empty filter, (2) are flywheel.

Fig. 2 is a charge heating formula single cylinder Small Universal petrol engine external structure connection diagram, and wherein (3) are that silencing apparatus, (4) are heat conduction manifold for spark plug, (7) for Carburetor, (8) for charge heating conduit, (6) for gasket seal, (5).

Fig. 3 is a charge heating formula single cylinder Small Universal petrol engine box inner structure schematic representation, and wherein (9) are that casing, (10) are cylinder head for connecting rod, (12) for piston, (13) for bent axle, (11).

Fig. 4 is the petrolic charge heating conduit of a charge heating formula single cylinder Small Universal schematic representation.

Fig. 5 is the petrolic gasket seal schematic representation of charge heating formula single cylinder Small Universal.

Embodiment

Below in conjunction with accompanying drawing the technical solution of the utility model is further described:

Charge heating formula single cylinder Small Universal petrol engine, it is by empty filter (1), flywheel (2), silencing apparatus (3), gasket seal (4), charge heating conduit (5), spark plug (6), Carburetor (7), heat conduction manifold (8), casing (9), bent axle (10), connecting rod (11), piston (12) cylinder head (13) is formed, it is characterized in that: when external force makes the petrol engine running, flywheel (2) rotation and drive piston (12) are reciprocating, when piston (12) by top dead center when lower dead center is moved, the low pressure that piston (12) top surface forms is broken up the high-speed air flow of fuel oil from the back carburetor throat of being flowed through of foam tube ejection of Carburetor (7), form vaporific particle, and with the air mixing that enters from empty filter (1), form oil/gas mixed gas, oil/gas mixed gas further enters gasoline engine combustion chamber after the gasification through charge heating conduit (5), spark plug (6) thus lighting mixture combustion promotes piston (12), the reciprocating bent axle (10) that makes of connecting rod (13) rotates, and gas of combustion is discharged through silencing apparatus (3).

The part high-temperature gas that the required heat energy of charge heating conduit (5) both can utilize silencing apparatus (3) inside to flow through, by the heat conduction manifold (8) that is connected with silencing apparatus (3) charge heating conduit (5) wall is heated, charge heating conduit (5) temperature rises and makes internal mix be so incensed that the heat that preheating is required; The temperature that also can utilize cylinder head (13) to produce is directly passed to charge heating conduit (5).One end of charge heating conduit (5) is connected with the suction port of cylinder head (13) by the stud bolt of cylinder head (13), the other end of charge heating conduit (5) is connected with the closure of Carburetor (7) by the stud bolt of cylinder head (13), the surface of contact at charge heating conduit (5) two ends seals with gasket seal (4), the air inlet port of heat conduction manifold (8) communicates with the exhaust elbow of silencing apparatus (3), and the exhaust port of heat conduction manifold (8) is close to the outer wall of charge heating conduit (5).

Most preferred embodiment:

The charge heating formula single cylinder Small Universal petrol engine that the utility model provides, on the basis that does not change existing single cylinder Small Universal petrol engine basic structure, directly utilize the cylinder head of general-purpose petrol engine or the heat that silencing apparatus produces or discharges, other heating equipment need be do not increased, the preheating of petrol engine mixed gas can be realized.

Compared with prior art, the single cylinder Small Universal petrol engine of a kind of charge heating formula that the utility model provides, make the easy atomizing of tiny olesome of Carburetor and form good inflammable mixture rapidly with air, reduce olesome in the absorption that enters on the chamber passage wall, reduced fuel consumption; Oil/gas mixed gas enters the firing chamber through after the preheating, and combustion thermal efficiency increases, and petrolic power output is stable; Oil/gas mixed gas enters cylinder through after the preheating, has protected the oil film on the cylinder wall, has reduced the wearing and tearing between casing wall and the piston ring; Oil/gas mixed gas enters combustion chambers burn through after the preheating, has reduced the pollution of harmful matters such as HC compound and CO to surrounding environment.The charge heating conduit that this programme adopted, heat conduction manifold, gasket seal, have that volume is little, the heat acquisition mode flexibly, reliable, advantages such as complete machine versatility and interchangeability are strong, and do not influence the complete machine appearance and the general assembly condition of former single cylinder small utility gasoline engine.

Claims

1, charge heating formula single cylinder Small Universal petrol engine, it comprises sky filter (1), flywheel (2), silencing apparatus (3), spark plug (6), Carburetor (7), casing (9), bent axle (10), connecting rod (11), piston (12) and cylinder head (13), it is characterized in that: it also comprises charge heating conduit (5), one end of charge heating conduit (5) is connected with the suction port of cylinder head (13) by the stud bolt of cylinder head (13), the other end of charge heating conduit (5) is connected with the closure of Carburetor (7) by the stud bolt of cylinder head (13), and the surface of contact at charge heating conduit (5) two ends is provided with gasket seal (4).

2, charge heating formula single cylinder Small Universal petrol engine according to claim 1, it is characterized in that: it also comprises heat conduction manifold (8), the air inlet port of heat conduction manifold (8) communicates with the exhaust elbow of silencing apparatus (3), and the exhaust port of heat conduction manifold (8) is close to the outer wall of charge heating conduit (5).