LOAD & HAUL T
he QSK60 engine was developed especially for mining and designed based upon the strength, performance and durability of the Cummins K2000E. There are now thousands of these engines in use across the world.
Arctic toll T
very difficult to keep clean.” To this end, a new NanoNet fuel filter system is incorporated, with a large single external filter feeding a heat exchanger to cool it, leading to three smaller filter units.
Te engines feature a Modular Common Rail System that’s designed to offer increased economy, one of the primary drivers behind the project. Extra cooling fans are installed, as the ambient temperatures can reach 60°C. To achieve the tight turnaround times, often completing the
he Kiruna mine in northern Sweden is a harsh
environment even by iron ore mining standards. At its deepest, it extends down to 1,540m, and outside temperatures can drop to -30ºC. Te site is just the place for cold climate testing – and that’s exactly what Volvo Construction Equipment (Volvo CE) uses it for, incorporating prototype machines into a customer’s fleet during a month-long winter expedition. Anders P Larsson, executive vice
president of Volvo CE’s Technology function explains: “In the deepest point of winter, Volvo CE sends around 100 of its engine and
machine engineers to carry out hundreds of tests on prototype machines as part of the company’s product development process. All
aspects of machine performance are tested, and everything is done twice, once during development and once later on in the process for verification.” Designing for the extreme
transformation within two and a half days, Cummins Rocky Mountain collaborated with Liebherr and Siemens as well as the ASARCO Ray crew. A full workshop at Avondale, Arizona was built for the task. During module removal and swing, the Cummins team works on rotating 12-hour shifts. Prior to this project, four or five days would be set aside to change an engine.
Service style ASARCO Ray likes to monitor vehicle performance closely, and has reported
Cold climate testing is essential to ensuring Volvo CVE’s systems can withstand freezing temperatures.
Volvo CE sends a fleet of engineers to conduct testing in wintry conditions.
20
www.engineerlive.com
cold presents certain challenges. Terefore, cold climate testing is essential to make sure the engine and all the systems and sub- systems can handle these freezing temperatures. Larsson adds, “As much as is possible, Volvo CE engines are the same for both winter and warmer climates but there are some differences in the
engine specs – such as electric block heaters to warm the engine. Te AdBlue reduction agent will freeze below -11°C, so in cold climates the tank and hoses are heated to allow injection to start as soon as possible after a cold start and ensure that the reduction agent remains in liquid form.” Volvo CE also offers a Siberian
Kit option for its articulated haulers. Tis is designed to allow machines to work in extremely low ambient temperatures, down to as low as -40°C. Te kit contains various modifications to sub-systems including electrical equipment, batteries, the hood, fuel supply and the radiator. l
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60