what does the word locomotive mean

During the year 1930 there was one engine which as on hype named as 'Ricardo' sleeve valve engine. Mirrlees the period introduced two Mirrleesengines represented this patent type of the valve engine. Well the first kind had bore of around 5.5 inches and developed a stroke of just about 6.5 inches and produced 20BHP each cylinder at rate of 900 r.p.m. the other had 17 inches bore and 21.5 inches stroke, giving 50BHP per cylinder on the rate of 200 r.p.m. Diesel particulate filter, filters the particulate matter by forcing the exhaust gases to secure a ceramic wall flow filter. The ceramic wall flow filter has a porous wall and is single ended. When the spent gases are forcibly passed through the porous wall, the particulate matter is filtered as well as the gas is let loose thereby reducing the particulate emission in the atmosphere. To imagine a social world before photography, we might need to make a world without picture IDs; without portraits of ordinary people; one without pictures as souvenirs of travel; one without celebrity pictures; one without advertising photographs; one without X-rays or views of outer space; a global without views of foreign and exotic peoples; one without pictures of sports, wars, and disasters; the other the location where the great numerous people had no method to visually record giving her a very events of these lives.