Apparatus for control of pressure in internal combustion engines

Patent · Tue Mar 17 04:00:00 EST 1992

OSTI ID:5238952

Blaser, R F; Pouring, A A

This patent describes improvement in an internal combustion engine including a variable volume combustion chamber into which is admitted a fuel air charge during at least part of an intake and compression event forming part of the operating cycle of the engine, such charge being compressed during at least part of the intake and compression event, reacted during a combustion/expansion event, and discharged during an exhaust event; a piston means moveable within a cylinder to vary its volume between the piston means and the head of the cylinder, the combustion chamber disposed between the working face of the piston means and the head of the cylinder; means for independently supplying air and fuel to the combustion chamber in timed relationship with the movement of the piston means, and inlet and exhaust valves for admitting air and fuel into the combustion chamber through an intake port and discharging of combustion products from the combustion chamber through an exhaust port, respectively. The improvement comprises: means for supplying substantially fuel-free air alone to the combustion chamber through the intake porting during the initial part of each charge intake and compression events; means for supplying fuel into the combustion chamber during a later part of each charge intake and compression event following the initial part, whereby the proportion of fuel to air of each charge varies from excess fuel near the intake port to substantially fuel-free air near the piston means at the beginning of the compression event; an air reservoir chamber means; a gap between the combustion chamber and air reservoir chamber, the gap forming a passageway providing restricted communication between the reservoir chamber and combustion chamber; the air reservoir chamber means located next to the working face of the piston and having a radially inner sidewall.

• Assignee: Sonex Research, Inc., Annapolis, MD (United States)
• Patent Number(s): A; US 5095869
• Application Number: PPN: US 7-915969
• OSTI ID: 5238952
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330603 -- Vehicle Design Factors-- Engine System
CONTROL
DESIGN
ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PRESSURE CONTROL