Patent ID: 8061311
Filing Date: 2011-11-22
Classification: F01L,F02D,Y02T

Abstract:
1. A variable valve actuating apparatus for an internal combustion engine, comprising: an intake valve operating angle varying mechanism arranged to vary an intake valve operating angle of the internal combustion engine, and to hold an intake valve closing timing of the internal combustion engine at or near bottom dead center, before startup of the internal combustion engine; an exhaust valve timing varying mechanism arranged to vary an exhaust valve opening timing and an exhaust valve closing timing of the internal combustion engine, while holding constant an exhaust valve operating angle of the internal combustion engine, and to hold the exhaust valve opening timing and the exhaust valve closing timing retarded by a predetermined amount from respective predetermined most advanced timings such that a predetermined valve overlap between intake valve and exhaust valve is produced before the startup of the internal combustion engine; and a controller comprising a section configured to: