This invention relates to internal combustion engines, and more particularly to exhaust valve constructions for use in such engines.
Internal combustion engines can be operated on a wide variety of fuels and while most are run on either diesel fuel or gasoline, many are designed to run on bottled gas, such as liquid propane. Lift trucks, for example, are frequently fueled with bottled gas.
Heretofore, special provisions have had to be made to adapt moving parts of internal combustion, reciprocating engines for use with liquid gas fuels, as liquid propane. Consequently, assembly problems have been accentuated due to the need for two sets of parts, one for gasoline and one for bottled gas.
The problem is being accentuated through the increased emphasis on low lead or lead-free gasolines which pose the need for still further modifications to component configurations to optimize efficiency.