CN2623889Y - Novel gasoline engine - Google Patents

Abstract

The utility model relates to a new gasoline engine which comprises a cylinder head, a cylinder body, a crank valve linkage mechanism, a valve actuating mechanism, air supply and exhaust system and so on. The utility model is characterized in that the cylinder is designed as two parts upper and lower, the installing holes of a double overhead cam shaft are arranged in the top and joint surfaces of the bottom bodies; a water jacket is designed as water flows in from the front end and flows out from the rear end, an inlet channel is arranged on the left and an exhaust gas channel is arranged on the right; a combustion chamber is designed as four-valve awning-shaped, and the angular separation of an intake valve and an exhaust valve distributes by a center line; an intermediate shaft is arranged on the cylinder body, and a two-stage timing gear is arranged on the shaft. The advantages of the utility model is embodied by adopting flow in from the front and flow out from the rear, cooling by enforcement, and flow field is uniform thus the overheating of the four cylinder is diminished; the combustion chamber is designed as four-valve awning shape, so that the charging efficiency is improved; supply and exhaust paths are arranged on either hand, so the temperature of the inlet air is decreased and the amount of the let air is increased. The valve actuating mechanism adopting camshaft timing gear driving the double overhead cam shaft making the valve moving through the two-stage slowdown transmission, thus the transferring precision and rate are improved.

Description

New-typed gasoline engine

Technical field

The utility model belongs to a kind of petrol engine, particularly a kind of novel every cylinder four-air valve petrol engine.

Background technique

At present, domestic light bus, pick up truck, sedan-chair truck etc. are extensive use of homemade 491Q Series Gasoline Engines, by using practice for over ten years, find that there is following main deficiency in the 491Q Series Gasoline Engines: 1, because petrol engine adopts front end water inlet front end water flowing out structure, four cylinder cooling effects are bad, are prone to superheating phenomenon; Head combustion chamber is the two valve bathtub shapes that fall behind, and charging efficiency is low; Intake and exhaust port causes intake temperature too high in a side, influences air inflow.2, distribution device adopts the other camshaft of putting, and drives valve by tappet, push rod, rocking arm, and bang path is long, and efficient is low.

The model utility content

The purpose of this utility model provides a kind ofly can eliminate four cylinder superheating phenomenons, improves charging efficiency, little investment, and production cycle is short, and the original production line loss is lost little, advanced in performance new-typed gasoline engine.

The purpose of this utility model is achieved by the following technical solution: comprise cylinder head, cylinder block, crank piston crank mechanism, distribution device, air inlet system and exhaust system, cooling system etc., it is characterized in that: cylinder head is designed to up and down two bodies, and the Dual Over Head Camshaft mounting hole is arranged on the junction plane of two bodies up and down; Water jacket is designed to front end water inlet and rear end water outlet, and intake duct is arranged on the left side, and air outlet flue is arranged on the right side; Combustion chamber design is the fluffy shapes of four valves, and the inlet and exhaust valve angle is pressed center line and is symmetrically distributed; Jack shaft is installed on the cylinder block, on the axle the positive hour wheel of secondary is housed, constitute secondary transmission distribution device.

Advantage of the present utility model: 1, adopt front end water inlet and rear end water outlet, force cooling, even flow field is eliminated four cylinder superheating phenomenons; Combustion chamber design is the fluffy shapes of four valves, the charging efficiency height; The inlet and outlet road is arranged on the both sides of cylinder head, has reduced intake temperature, has increased air inflow.2, distribution device adopts the positive hour wheel of bent axle by the double reduction transmission, directly drives Dual Over Head Camshaft and drives valve, has improved transmitting accuracy and efficient.

Description of drawings

Fig. 1 is the utility model transverse sectional view.

Fig. 2 is the utility model distribution device drive mechanism schematic representation.

Fig. 3 is the utility model cylinder head water cavity sectional view.

Fig. 4 is the utility model chamber configuration figure.

Fig. 5 is the utility model cylinder head intake and exhaust port sectional view.

Embodiment

See Fig. 1-5, concrete structure is as follows: cylinder head is designed to upper body 4 and lower body 5 constitutes by the attachment bolt assembling, and the mounting hole of Dual Over Head Camshaft 2,6 is arranged on the two body junction planes of upper body 4 and lower body 5; Intake duct 7, air outlet flue 10, firing chamber 8 are arranged on the lower body 5, and intake duct 7 is arranged on the left side, and air outlet flue 10 is arranged on right side (from the petrol engine front end backward); See Fig. 1,4,5, firing chamber 8 is designed to the fluffy shape of four valves, and intake valve 3, exhaust valve 1 are pressed 20 ° of symmetrical distributions of center line with cylinder centerline angle α; See Fig. 3, spark plug mounting hole 19 is arranged on the central authorities of firing chamber 8, strengthens at drain-side water jacket 20 film-cooled heats, and cylinder head upper body 4 and lower body 5 coolings are from front end 22 water inlets, rear end 21 water outlets.See Fig. 1,2, jack shaft 9 is installed on the cylinder block, single little positive hour wheel 14 of positive hour wheel 13 front ends assembling on the jack shaft 9, the positive hour wheel 11 of bent axle links to each other with positive hour wheel 13 on the jack shaft 9 by transmission connection piece 12, little positive hour wheel 14 links to each other with two camshaft timing wheels 16,18 by transmission connection piece 15, positive hour wheel drives camshaft 6,2 rotations, drives inlet and exhaust valve 3,1 motion, realizes air intake-exhaust.Owing to adopt the double reduction transmission, reduced the diameter of the positive hour wheel 16,18 of overhead camshaft, make cylinder cap lateral arrangement compactness, the valve timing transmission is provided with the tension device 17 of oil pressure machinery and usefulness, has eliminated the transmission connection piece vibration, has improved transmitting accuracy.

Claims (2)

1, a kind of new-typed gasoline engine, comprise cylinder head, cylinder block, crank piston crank mechanism, distribution device, air inlet system and exhaust system, cooling system etc., it is characterized in that: cylinder head is designed to up and down two bodies, and the Dual Over Head Camshaft mounting hole is arranged on the junction plane of two bodies up and down; Water jacket is designed to front end water inlet and rear end water outlet, and intake duct is arranged on the left side, and air outlet flue is arranged on the right side; Combustion chamber design is the fluffy shapes of four valves, and the inlet and exhaust valve angle is pressed center line and is symmetrically distributed; Jack shaft is installed on the cylinder block, on the axle the positive hour wheel of secondary is housed, constitute secondary transmission distribution device.

2, new-typed gasoline engine according to claim 1, it is characterized in that: positive hour wheel front group is adorned a single little positive hour wheel on the jack shaft of secondary transmission distribution device, the positive hour wheel of bent axle links to each other with positive hour wheel on the jack shaft by transmission connection piece, and little positive hour wheel links to each other with two camshaft timing wheels by transmission connection piece.