The invention relates to the technical field of
internal combustion engine accessory manufacturing, in particular to a
piston of an energy-saving environment-friendly mounting clearance
pairing piston ring. The
piston of the energy-saving environment-friendly mounting clearance
pairing piston ring comprises a piston body, a first gas ring and a second gas ring, wherein the first gas ring and the second gas ring are installed on the piston body, one end of an opening of a ring body of each gas ring serves as an extending portion, the other end of the opening of the ring body of each gas ring serves as a lap-joint portion, each lap-joint portion corresponds to each extending portion in length, when
lap joint is carried out on each lap-joint portion and each extending portion in a vertical mode to enable the ring body of each gas ring to form the whole circle, a gap which cannot expand along with increase of the abrasion loss of each gas ring is formed between the slope of each extending portion and the slope of each lap-joint portion, a fixed matched proportion is arranged between the gap formed between the slopes at the position of the
lap joint of the opening of the first gas ring and the gap formed between the slopes at the position of the
lap joint of the opening of the second gas ring, and the value of the fixed matched proportion is 0.035mm-0.18mm to 0.02mm-0.12mm. The piston of the energy-saving environment-friendly mounting clearance
pairing piston ring can greatly improve the sealing performance and the
compression pressure of an air cylinder,
fuel oil can carry out sufficient
combustion, the phenomenon of
carbon deposit can never happen, consumption of the
fuel oil and consumption of engine oil are reduced,
pollution emission is reduced, and various
mechanical property indexes and various economic indexes of an
internal combustion engine are greatly improved.