TH49433B - Variable valve system - Google Patents

Abstract

DC60 (02/02/58) in the variable valve system of the engine equipped with a pressure reducing device with a reduction cam. Pressure, which can extend outward greater than the base circle of the exhaust cam on the camshaft, and includes the throttle drive assembly, which follows the high position of the camshaft in order to open the tongue. And will follow the pressure reducing cam in order to open the exhaust valve when the pressure reducing cam is filed. Outward than the base circle part Due to the use of coupling characteristics of the equipment Pressure and split cam with different cam profile than the exhaust cam profile, it is possible to make the variable valve system with compact elements while changing. Functional characteristics of the exhaust camshafts in a versatile manner, separate cam 33 with different cam profile from the exhaust cam profile 31 is installed on the camshaft 32 at the location where the exhaust cam. 31 will be articulated. Between the split cam 33 and the pressure reduction cam 35 in such a way that the throttle assembly 39 can be interchanged during the condition in which the throttle assembly 39 is fulfilled. The exhaust cam 31 and the condition in which the throttle drive assembly 39 has been made to the separate cam 33, which will rotate together with the camshaft 32, revised the Invention Conclusion 2/02/2015 in the variable valve system of the engine. Which is equipped with a pressure reducing device with a reduction cam Pressure, which can extend outward greater than the base circle of the exhaust cam on the camshaft, and includes the throttle drive assembly, which follows the high position of the camshaft in order to open the tongue. And will follow the pressure reducing cam in order to open the exhaust valve when the pressure reducing cam is filed. Outward than the base circle part Due to the use of coupling characteristics of the equipment Pressure and split cam with different cam profile than the exhaust cam profile, it is possible to make the variable valve system with compact elements while changing. Functional characteristics of the exhaust camshafts in a versatile manner, separate cam 33 with different cam profile from the exhaust cam profile 31 is installed on the camshaft 32 at the location where the exhaust cam. 31 will be articulated. Between the split cam 33 and the pressure reduction cam 35 in such a way that the throttle assembly 39 can be interchanged during the condition in which the throttle assembly 39 is fulfilled. The exhaust cam 31 and the condition in which the valve drive assembly 39 has been made to the separate cam 33, which rotates in parallel with the camshaft 32 ----------------- ------------------------------------- In the variable valve system of the engine equipped with a reduction device Pressure with reduction cam Pressure, which can extend outward greater than the base circle of the exhaust cam on the camshaft, and includes the throttle drive assembly, which follows the high position of the camshaft in order to open the tongue. And will follow the pressure reducing cam in order to open the exhaust valve when the pressure reducing cam is filed. Outward than the base circle part Due to the use of coupling characteristics of the equipment Pressure and split cam with different cam profile than the exhaust cam profile, it is possible to make the variable valve system with compact elements while changing. Functional characteristics of the exhaust camshafts in a versatile manner, separate cam 33 with different cam profile from the exhaust cam profile 31 is installed on the camshaft 32 at the location where the exhaust cam. 31 will be articulated. Between the split cam 33 and the pressure reduction cam 35 in such a way that the throttle assembly 39 can be interchanged during the condition in which the throttle assembly 39 is fulfilled. The exhaust cam 31 and the condition in which the throttle drive assembly 39 is met with the split cam 33, which rotates in parallel with the camshaft 32.

Claims (4)

Disclaimer (all) which will not appear on the announcement page: EDIT 2/02/2015 1. The variable valve system of the engine is included: the camshafts (32) which are rotatable. On the cylinder head (13); The exhaust cam (31), which has been installed on the camshaft (32) and will include the base circle section (31a) with the sub-axial arc shape of the camshaft (32) and the high position section (31b), which is obtained. Formation adjacent to both circumferential ends of the base circle (31a) when the upper part protrudes more than the base circle (31a); A pressure reducing device (34A, 34B) which will be installed on the camshaft (32) and includes the pressure reducing cam (35), which can protrude more outward than the base circle (31a) of the Exhaust cam (31); And the throttle drive assembly (39), which follows the high position section (31b) of the exhaust cam (31), in order to open the exhaust cam (25) and follow the pressure reducing cam (35) in order to Open the exhaust cam profile (25) when the pressure reducing cam (35) protrudes outward than the base circle part (31a) where the split cam (33) has a different cam profile from the exhaust cam profile. (31) it will be installed on the camshaft (32) where the exhaust cam (31) is articulated. Between the split cam (33) and the pressure reduction cam (35) in such a way that the throttle assembly (39) can be interchanged during the condition in which the throttle assembly (39) is permitted. It is in accordance with the exhaust cam (31) and the condition in which the throttle assembly (39) is permitted. It follows the split cam (33), which is rotated simultaneously with the camshaft (32). 2. The engine's variable valve system, according to claim 1, where the exhaust cam (31) and the intake cam ( 30) For opening / closing the intake valve (24) it is installed on the camshaft (32) which is rotatable supported on the cylinder head (13) by means of the first bearing. And the second (44, 45), the exhaust cam (31) and the intake cam (30) will be arranged between the first and second bearing (44, 45) and the pressure reducing device (34A) will It is arranged between the intake cam (30) and the exhaust cam (31) 3. The variable valve system of the engine according to claim 2, where the pressure reducing device (34A) will be supported on the cam. Intake (30) and exhaust cam (31) 4.Variable valve system of the engine according to claim 1, where the exhaust cam (31) and the intake cam (30) for opening / closing the intake valve (24 ) Are mounted on the camshaft (32), which are rotatable supported on the cylinder head (13) by means of the first and second bearings (44, 45). The exhaust cam (31) and the intake cam (30) are arranged between the first and second bearing (44, 45) and the split cam (33), which is the exhaust gas recirculation cam for opening the flaps. Exhaust (25) To restore part of the exhaust gas that has been released from the combustion chamber (17) to the combustion chamber (17) is arranged between the exhaust cam (31) and the intake cam ( 30) ------------------------------------------------ -------------------------------------------------- -------------------------- 1. The variable valve system of the engine is composed of: the camshaft (32) which is rotatable supported on the cylinder head (13); The exhaust cam (31), which has been installed on the camshaft (32) and will include the base circle section (31a) with the sub-axial arc shape of the camshaft (32) and the high position section (31b), which is obtained. Formation adjacent to both circumferential ends of the base circle (31a) when the upper part protrudes more than the base circle (31a); A pressure reducing device (34A, 34B) which will be installed on the camshaft (32) and includes the pressure reducing cam (35), which can protrude more outward than the base circle (31a) of the Exhaust cam (31); And the throttle drive assembly (39), which follows the high position section (31b) of the exhaust cam (31), in order to open the exhaust cam (25) and follow the pressure reducing cam (35) in order to Open the exhaust cam profile (25) when the pressure reducing cam (35) protrudes outward than the base circle part (31a) where the split cam (33) has a different cam profile from the exhaust cam profile. (31) it will be installed on the camshaft (32) where the exhaust cam (31) is articulated. Between the split cam (33) and the pressure reduction cam (35) in such a way that the throttle assembly (39) can be interchanged during the condition in which the throttle assembly (39) is permitted. It is in accordance with the exhaust cam (31) and the condition in which the throttle assembly (39) is permitted. It is according to the split cam (33), which will be rotated simultaneously with the camshaft (32). 2. Engine variable valve system according to claim 1 where the exhaust cam (31) and the intake cam (30) for opening / closing the intake valve (24) are installed on the shaft. The cam (32), which is rotatable on the cylinder head (13) by means of the first and second bearings (44, 45), the exhaust cam (31) and the intake cam (30) is obtained. Arranged between the first and second bearing (44, 45) and the pressure reducing device (34A) is arranged between the intake cam (30) and the exhaust cam (31). 3.Variable engine valve system according to claim 2, where the pressure reducing device (34A) will be supported on the intake cam (30) and the exhaust cam (31). 4.The engine's variable valve system according to claim 1, where the exhaust cam (31) and the intake cam (30) for opening / closing the intake valve (24) are installed on the shaft. Cam (32), which can be rotated on the cylinder head (13) by means of the first and second bearing (44, 45) in the condition that the exhaust cam (31) and the intake cam (30) can be achieved. It is arranged between the first and second bearing (44, 45) and the split cam (33), which is the exhaust gas recirculation cam for opening the flap flaps (25) to make part of the resulting exhaust gas. The discharge from the combustion chamber (17) is returned to the combustion chamber (17), it is arranged between the exhaust cam (31) and the intake cam (30).