Abstract: A radially-valved compressor wherein the fixed clearance of the compressor can be quickly and easily adjusted by adjusting the position of the suction and/or discharge valves in relation to their respective compression chambers. The valves are slidably positioned within the radial bores and are adjusted by means of threaded shafts which extend from the valves through the retainer caps which close the bores. When a valve is threadedly moved into its bore, the clearance within the compression chamber is decreased. When the valve is threadedly moved out of its bore, the fixed clearance is increased.

Abstract: A 4-stroke, internal combustion engine having two intake valves for each cylinder wherein a single rocker-arm assembly actuates both of the intake valves in a timed sequence to provide a stratified charge to the cylinder.

Abstract: A control system for a compressor unit driven by a clean-burn, turbo-charged, gas-fueled engine which is primarily responsive to the load (torque) and the speed of the engine to adjust certain engine parameters to maintain the operating conditions of the engine within a desirable operating zone which is a compromise or "trade-off" between best fuel economy and permissible exhaust emission levels. A number of "maps" which correlate load (torque) at various speeds with specific fuel consumption and exhaust emissions are derived from available manufacturer's data and are programmed into a central processing unit (CPU).