To find the exact location it is probably best to look in the manual for the car and/or have a professional mechanic look at the car.
A camshaft is a shaft to which a cam is fastened, or of which a cam forms an integral part. As with your question the camshaft is used in modern internal combustion engines with pistons, the camshaft is used to operate poppet values.
It consists of a cylindrical rod running the length of the cylinder bank with a number of oblong lobes protruding from it, one of each valve. The cam force the valve open by pressing on the valve.
Depending on the location of the camshaft, the cams operate the valves either directly or through a linkage of pushrods and rockers. Direct operation involves a simpler mechanism and leads to fewer failures, but requires the camshaft to be positioned at the top of the cylinders. As with your question the most common system in the overhead cam system, where the camshaft is on top of the cylinder head.
The rockers or cam followers sometimes incorporate a system to adjust and set the valve play through manual adjustment, but most modern engines have hydraulic lifters eliminating the need to adjust the valve lash at regular intervals as the valvetrain wears, and in particular, the valves and valve seats in the combustion chamber.
Sliding friction between the surface of the cam and the cam follower, which it rides upon, is considerable. In order to reduce wear at this point, the cam and follower are both surface hardened and modern motor oils contain additives specifically to reduce sliding friction.
For more information on camshafts In general, please see the following link: en.wikipedia.org/wiki/Camshaft
- What is a camshaft
A camshaft is a shaft to which a cam is fastened, or of which a cam forms an integral part. As with your question the camshaft is used in modern internal combustion engines with pistons, the camshaft is used to operate poppet values.
It consists of a cylindrical rod running the length of the cylinder bank with a number of oblong lobes protruding from it, one of each valve. The cam force the valve open by pressing on the valve.
- Position
Depending on the location of the camshaft, the cams operate the valves either directly or through a linkage of pushrods and rockers. Direct operation involves a simpler mechanism and leads to fewer failures, but requires the camshaft to be positioned at the top of the cylinders. As with your question the most common system in the overhead cam system, where the camshaft is on top of the cylinder head.
- Maintenance
The rockers or cam followers sometimes incorporate a system to adjust and set the valve play through manual adjustment, but most modern engines have hydraulic lifters eliminating the need to adjust the valve lash at regular intervals as the valvetrain wears, and in particular, the valves and valve seats in the combustion chamber.
Sliding friction between the surface of the cam and the cam follower, which it rides upon, is considerable. In order to reduce wear at this point, the cam and follower are both surface hardened and modern motor oils contain additives specifically to reduce sliding friction.
For more information on camshafts In general, please see the following link: en.wikipedia.org/wiki/Camshaft
