Internal combustion engines and method of operting an internal c

Details Internal combustion engines and method of operting an internal c Internal combustion engines and method of operting an internal c

1990-10-04

1991-12-31

Wolfe, Jr., Willis R.

Internal-combustion engines

Precombustion and main combustion chambers in series

Having specific connecting passage means between...

123256, 123661, F02B 1904, F02B 1918

Patent

active

050762290

ABSTRACT:
An internal combustion engine and method of operation is disclosed as having a combustion chamber design which allows for staged combustion within the chambers. The internal combustion engine of the invention is designed as a split chamber, staged combustion engine which comprises a cylinder and having at least two regions formed therein. Within the cylinder is a piston slidably disposed therein to form a plurality of combustion chambers in association with the cylinder, and particularly at least one primary and secondary combustion chamber which are communicable with one another. Fuel delivery is accomplished by fuel injectors or the like associated with the primary combustion chamber, being operable to admit fuel into the primary combustion chamber at preselected intervals and in predetermined amounts. The fuel admitted in top the primary combustion chamber is ignited to begin initial combustion of the fuel as a first stage of combustion. After initial combustion starts, the ignited fuel mixture within the primary combustion chamber is forced into the secondary combustion chamber for continued burning thereof in a second stage of combination. The apparatus and method of the invention results in a number of advantages including reducing unburned hydrocarbons and the formation of nitrous oxides in the combustion process. Additionally, the engine design and method of operation will allow higher efficiency and high RPM operation and will also produce large amounts of torque at lower power settings as well as higher compression ratios for better fuel economy and power output.

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