| 摘要 |
#CMT# #/CMT# Combustion chamber inlet and outlet valves (10, 13) are connected to crank- and cam shafts for timed operation during the engine cycle. The compressor (4) pressurizes the inlet volume (9) ahead of the combustion chamber inlet valve (10). Fuel injection is metered. A butterfly valve (8) controls the pressure in the inlet volume. In novel design, the combustion chamber has a further inlet valve (11) connecting it to the compressed air tank (14). This valve is controlled via crank- and cam shafts. A mechanism interrupts this control, leaving the inlet valve (11) closed over a number of cycles. #CMT# : #/CMT# An independent claim is included for the method of operation. #CMT#USE : #/CMT# A turbo-charged internal combustion engine. #CMT#ADVANTAGE : #/CMT# The additional valve in the engine cylinder allows compressed air to be fed in from a compressed air tank (14) when required to bridge the so-called turbo lag. During this interval the turbo-charger speed increases. In earlier engines, the interval is perceived as a delay before the full, demanded power output is reached. In the new design, compressed air eliminates effects of turbo lag and achieves smooth power increase. Valve timing and injection are controlled suitably during all running states. When necessary, air is pumped from the cylinders into the compressed air tank, to recharge it. Four implementations of the invention are described in detail. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic plan view of the turbo-charged engine. 4 : compressor 8 : butterfly valve 9 : inlet volume 10, 13 : inlet and outlet valves 11 : further inlet valve 14 : compressed air tank. |
