Structure of cylinder head of IC engine
A technology of internal combustion engine cylinder and cylinder head, applied in the direction of cylinder head, cylinder, mechanical equipment, etc., can solve problems such as interference
Inactive Publication Date: 2003-03-26
HONDA MOTOR CO LTD
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Problems solved by technology
[0011] When the cylinder head fastening part is located below the joint surface with the cylinder cover 03, interference with the valve lifter becomes a problem, and it is necessary to avoid the chambers 08 and 09 for housing the valve lifters in the bearing part as in the above example. Under 05 and 06, measures such as fastening parts 010 and 011 are installed at a part of the upper and lower overlapping positions, so that the cylinder head is enlarged
Method used
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Embodiment Construction
[0040] According to Figure 1- Figure 15 An example of the present invention will be described.
[0041] The internal combustion engine 1 of the present embodiment is a 2 overhead camshaft type single-cylinder 4-stroke internal combustion engine, and two valve camshafts for the intake valve and the exhaust valve are provided above the cylinder, and its overall right side view and right sectional view are as follows As shown in Figure 1 and Figure 2, the left side view and left sectional view are shown in Figure 3, Figure 4 shown.
[0042] The internal combustion engine 1 is roughly divided into a crankcase 2, a cylinder 3, a cylinder head 4, and a cylinder cover 5, which are superimposed and assembled in this order upwards and slightly inclined forward.
[0043] The crankcase 2 supports the crankshaft 10 pointing to the left and right horizontal direction in a pivoting manner, and forms a transmission chamber behind it. As shown in FIG. Arrangement, the subshaft 15 is arra...
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The present invention relates to a structure of cylinder head of an internal combustion engine. In a double upper cam shaft type internal combustion engine provided with a plurality of intake valves and exhaust valves, and a cam shaft for an intake valve and a cam shaft for an exhaust valve, cylinder head fastening parts 46La, 46Ra, 47La, and 47Ra are arranged at the inside of bearings 43L and 43R and bearings 44L and 44R, to support the two cam shafts, and both sides of a plurality of intake valves and a plurality of exhaust valves. The seat surfaces of the cylinder head fastening parts 46La, 46Ra, 47La, and 47Ra are positioned flush with a cylinder head cover mounting surface 4a. In this way, the invention can facilitate machining of a cylinder head, can suppress the generation of vibration, and can compact an internal combustion engine.
Description
technical field [0001] The present invention relates to a cylinder head structure of a double overhead camshaft internal combustion engine. Background technique [0002] 2 The overhead cam internal combustion engine has a camshaft for the intake valve and a camshaft for the exhaust valve on the cylinder head. In this 2 overhead cam internal combustion engine, a plurality of valves are arranged on the cylinder head, There are at least 2 bearings on the shaft, and a drive mechanism for driving the camshaft is required, so that there is little room for downsizing the internal combustion engine, and the arrangement of the fastening parts used to fasten the cylinder head to the cylinder and crankcase becomes question. [0003] The invention described in Japanese Unexamined Patent Publication No. 8-177515 as an example of a conventional 2 overhead camshaft type internal combustion engine is as follows: Figure 16 shown. [0004] Figure 16 It is a cross-sectional view of the int...
Claims
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IPC IPC(8): F02B67/06F01L1/053F01L1/26F02B61/02F02B75/16F02F1/00F02F1/24F02F1/42F02F7/00
CPCF02F7/006F01L1/26F02F2007/0063F02B75/16F02B2275/18F02F2001/245F01L1/0532F02F1/4214F02B61/02
Inventor 户坂哲也古谷昌志
Owner HONDA MOTOR CO LTD