초록

A paintball gun is disclosed which includes a data link for transferring data to and/of from a remote terminal. The link may be a contact or contactless one. A removable data carrier may be used.

대표청구항 ▼

A paintball gun is disclosed which includes a data link for transferring data to and/of from a remote terminal. The link may be a contact or contactless one. A removable data carrier may be used. t permits an abnormality diagnosis on a condition that an engine operating condition and an environment

A paintball gun is disclosed which includes a data link for transferring data to and/of from a remote terminal. The link may be a contact or contactless one. A removable data carrier may be used. t permits an abnormality diagnosis on a condition that an engine operating condition and an environment state satisfy predetermined conditions, in addition to the condition that the change amount has been kept equal to or less than said predetermined limit value for a predetermined period. 5. An apparatus diagnosing a variable valve timing apparatus according to claim 1, wherein said diagnosis permission unit also permits an abnormality diagnosis on a condition that the control target value of said rotation phase does not coincide with a reference value regulated by a stopper, in addition to the condition that the change amount has been kept equal to or less than said predetermined limit value for a predetermined period. 6. An apparatus diagnosing a variable valve timing apparatus according to claim 1, wherein said diagnosis unit judges an abnormality when a deviation between the control target value of said rotation phase and an actual value of said rotation phase has been kept out of a predetermined range for a predetermined period or more. 7. An apparatus diagnosing a variable valve timing apparatus according to claim 1, wherein said valve timing adjustment mechanism changes said rotation phase with respect to the crankshaft with a friction braking by an electromagnetic brake. 8. A method for diagnosing a variable valve timing apparatus which comprises a variable valve timing adjustment mechanism for variably controlling a rotation phase of a camshaft with respect to a crankshaft, to adjust the valve timing of an intake valve and an exhaust valve of an internal combustion engine, comprising: calculating a change amount per unit time in a control target value of said rotation phase; comparing said calculated change amount with a predetermined limit value; permitting an abnormality diagnosis of said variable valve timing apparatus on a condition that said change amount has been kept equal to or less than said predetermined limit value for a predetermined period by said comparison; and diagnosing an abnormality of said variable valve timing apparatus when said abnormality diagnosis is permitted. 9. A method for diagnosing a variable valve timing apparatus according to claim 8, wherein at least one of said predetermined limit value and said predetermined period is variably set corresponding to an engine temperature. 10. A method for diagnosing a variable valve timing apparatus according to claim 8, wherein at least one of said predetermined limit value and said predetermined period is variably set corresponding to an engine rotation speed. 11. A method for diagnosing a variable valve timing apparatus according to claim 8, wherein an abnormality diagnosis is permitted on a condition that an engine operating condition and an environment state satisfy predetermined conditions, in addition to the condition that the change amount has been kept equal to or less than said predetermined limit value for a predetermined period. 12. A method for diagnosing a variable valve timing apparatus according to claim 8, wherein an abnormality diagnosis is permitted on a condition that the control target value of said rotation phase does not coincide with a reference value regulated by a stopper, in addition to the condition that the change amount has been kept equal to or less than said predetermined limit value for a predetermined period. 13. A method for diagnosing a variable valve timing apparatus according to claim 8, wherein the presence of abnormality is judged when a deviation between the control target value of said rotation phase and an actual value of said rotation phase has been kept out of a predetermined range for a predetermined period or more. 14. A method for diagnosing a variable valve timing apparatus according to claim 8, wherein the valve timing is controlled by changing said rotation phase with respect to the crankshaft with a friction braking by an electromagnetic brake. udes the movable valve mechanism, the hydraulic pressure control valve, and the controller. The movable valve mechanism changes the opening/closing timing of an air intake or exhaust valve depending on the supplied hydraulic pressure of the working fluid. The hydraulic pressure control valve adjusts the supplied hydraulic pressure depending on the working condition of the spool. The controller controls the solenoid that drives the spool. When it is determined that the spool is in the returning state, in which the spool starts moving toward the initial position, the foreign object removal operation is executed. During the foreign removal operation, the spool temporarily reciprocates in order to remove foreign objects in the hydraulic pressure control valve.