초록 ▼

A method of and apparatus for starting and accelerating a vehicle through a range of vehicle speeds during which the vehicle\s internal combustion engine is operated in a plurality of different operating modes is disclosed. The engine may first be cranked in a compressionless mode preparatory to sta

A method of and apparatus for starting and accelerating a vehicle through a range of vehicle speeds during which the vehicle\s internal combustion engine is operated in a plurality of different operating modes is disclosed. The engine may first be cranked in a compressionless mode preparatory to starting and then run in a second mode at a relatively low speed for a warm-up interval as a six-stroke cycle engine where each engine cylinder cycle includes an essentially adiabatic compression and expansion. The system may then convert to a third mode of operation as a four-stroke cycle engine during normal engine operation. Different operating modes are available during this normal engine operation. Under high demand conditions, the engine may be run as a conventional inefficient but effective throttled engine or converted to operate in a fourth mode as a two-stroke cycle engine. The system responds to second engine conditions to modify the parameters in a memory table and controls the vehicle in accordance with the parameters stored in the table. Both short term modification to accommodate dynamic changes in the sensed engine conditions and long term modification to compensate for relatively slow changes in the engine and the management system are made to the information in a random access memory. The modifications may be on an overall engine basis or an individual cylinder basis.

대표청구항 ▼

The method of operating an electronically controlled valve actuating mechanism and an associated valve on a reciprocating piston four stroke cycle internal combustion engine comprising the steps of storing a plurality of different valve actuation time determining values, monitoring a plurality of cu

The method of operating an electronically controlled valve actuating mechanism and an associated valve on a reciprocating piston four stroke cycle internal combustion engine comprising the steps of storing a plurality of different valve actuation time determining values, monitoring a plurality of current engine operating traits, selecting the value best suited to the current operating traits, and actuating the valve at the time determined by the selected value, the step of selecting including selectively modifying the values based on engine operating experience.