The first Chinese-built Liebherr R 922 crawler excavators for low regulated markets are now operating in China. The firm has developed three machines weighing from 20-25 tonnes specifically for customers in low regulated markets. The R 922 crawler excavator sits in the middle of this three-model range, which also includes the R 920 and R 924, and one of the first units from the series is being used for earthmoving work in China. The machine meets the Stage IIIA/ Tier 3/CHINA III emissions, which allows it
Warm mix asphalt can save energy and the environment, cutting emissions of carbon dioxide and other harmful gases, but are environmental arguments enough for clients and contractors? Kristina Smith asks Though popular in the United States, warm mix asphalt is still a technology waiting to happen in the rest of the world. Chemical companies who imagined a meteoric rise in sales are still waiting for the right economic conditions to allow warm mix to start taking serious market share from hot mix. “In Europe
Driveline technology continues to develop rapidly, with many manufacturers at this year’s Conexpo exhibition showing Tier 4 Final emissions solutions, along with a host of fuel saving transmissions and hydraulic systems, all aiming to reduce operating costs for the customer. However, while there was certainly a hybrid presence at the show, things haven’t perhaps moved forward as fast as many had expected.
