초록 ▼

A control module which controls camless hydraulically driven intake and exhaust valves and an hydraulically driven fuel injector of an internal combustion engine. The module contains a valve assembly to control the intake valve, a valve assembly to control the exhaust valve and a valve assembly to c

A control module which controls camless hydraulically driven intake and exhaust valves and an hydraulically driven fuel injector of an internal combustion engine. The module contains a valve assembly to control the intake valve, a valve assembly to control the exhaust valve and a valve assembly to control the fuel injector. The valve assemblies preferably each contain a pair of solenoid actuated two-way spool valves. The solenoids are actuated by digital pulses provided by an electronic assembly within the module. The solenoid actuated spool valves control the flow of a hydraulic fluid to and from the fuel injector and the intake and exhaust valves. The hydraulic fluid opens and closes the intake and exhaust valves. The hydraulic fluid also actuates the fuel injector to eject a fuel into a combustion chamber of the engine. The electronic assembly of each module can be connected to a main microprocessor which provides commands to each assembly. Each electronic assembly processes the command, feedback signals from the hydraulically actuated devices and historical data to insure a desired operation of the fuel injector and intake and exhaust valves.

대표청구항 ▼

[ What is claimed is:] [1.] A fluid control system for an internal combustion engine which contains a first hydraulically controlled device and a second hydraulically controlled device, comprising:a pump that pumps a fluid from an outlet port;a pressurized rail line coupled to said outlet port of sa

[ What is claimed is:] [1.] A fluid control system for an internal combustion engine which contains a first hydraulically controlled device and a second hydraulically controlled device, comprising:a pump that pumps a fluid from an outlet port;a pressurized rail line coupled to said outlet port of said pump;a drain line;a first valve assembly that is connected to said pressurized rail line, said drain line, and the first hydraulically controlled device, said first valve assembly can be switched into either a first, second, or third mode, wherein the first hydraulically controlled device is coupled to said pressurized rail line when said first valve assembly is in the first mode, and coupled to said drain line when said first valve assembly is in the second mode, said pressurized rail line is coupled to said drain line when said first valve assembly is in the third mode; and,a second valve assembly that is connected to said pressurized rail line, said drain line, and the second hydraulically controlled device, said second valve assembly can be switched into either a first or second mode, wherein the second hydraulically controlled device is coupled to said pressurized rail line when said second valve assembly is in the first mode, and coupled to said drain line when said second valve assembly is in the second mode.