Excavators are now almost a century-old, as an equipment category. It has evolved over the years from a mechanical device to electrically-operated machines and then hydraulically-operated, much faster, production equipment. The evolution is ongoing with the induction of newer technologies to improve various operating parameters like fuel efficiency, faster or safer operations etc.

A controller for optimising the combination of power (engine or hydraulic) and efficiency was introduced many years back ushering in the era of “machine management” enabling use of only as much power as was necessary for the operator to carry out the given task.

Explaining what makes an excavator smart, S K Jaruhar, Advisor – Support Services, Kobelco Construction Equipment (India) Pvt Ltd, says, “More recent trend we see is machines having capabilities to carry out pre-defined tasks like digging to a given depth or slope and not beyond. These features enable operators to work more precisely with minimal wastage of fuel or effort.”

Smart features of Kobelco Generation 10
Kobelco has launched its latest Generation 10 in India. These machines have several smart features including:
• The next-gen controller with several advantages for more operating efficiency and fuel economy.
• The unique Auto-Idle-Stop (AIS) which facilitates the switching off of the engine if the operating controls are not used for 60 seconds.
• Filtration system with smart sensors.
• Automatic switching function for high-altitude locations.
• Boom and arm regeneration systems utilising the weight of the attachment for more efficient energy utilisation.
• New smart display monitor allows the operator to not only select the operating mode but also the hydraulic oil flow and pressure settings.
• A KPSS release switch enables the operator to continue working in the unlikely event of any problem with the controller.
• GEOSCAN – A remote-monitoring telematics device which allows for management of key parameters of the excavator.

Volvo CE: Riding on automation
Automation, not just for excavators but other types of machines as well, delivers more environmentally-friendly operations through improved productivity. Using intelligent machinery to manage duty-cycle work means energy usage is optimised. “Automation should make it easier to change machine applications quickly, giving greater flexibility in utilisation,” believes Dimitrov Krishnan, Vice President and Head of Volvo Construction Equipment India. For example, the Eco mode enables some of Volvo CE’s excavators to switch off the engines when idling – thus helping deliver fuel efficiency and cost savings for the customer.

“Our latest excavators are equipped with intelligent work modes, including the new G4 work mode,” claims Krishnan. He opines, “Operators can choose a mode that best suits the task at hand, selecting from idle, fine, general, heavy, and power max modes. Choosing the correct mode ensures productivity is optimised. Models such as our EC210D and EC250D possess this feature.” On the EC350D, there is an Eco mode, which automatically switches off the engine when the machine is idling. This helps further reduce fuel consumption.

Also, with CareTrack telematics system, Volvo CE’s customers can obtain a wide range of information on machine performance that can be used to help save time and money. Operation reports allow for the monitoring and minimisation of idle time so that fuel consumption can be optimised and non-productive machine hours and service costs reduced. The information can also help customers increase uptime by planning machine servicing and maintenance in advance, thereby avoiding potential problems. The CareTrack telematics system also allows the local Volvo dealer to troubleshoot faults remotely.

Smart engineering starts with ‘hydraulics’
Speaking on what makes an excavator smart, Nischal Mehrotra, Director- Sales and Marketing, LiuGong India Pvt Ltd, says, “There are many ways and examples of smart engineering in excavators, and it starts with hydraulics. The machine’s Computer Aided Power Control System (CAPC) system and perfect matching between hydraulics, mechanical and electronic components. Features like telematics or GPS help customer keep a close eye on the machine utilisation, fuel consumption and machine health. Ergonomic design and ease for operator while machine operations are few keys things which makes and excavator smart and productive.”

LiuGong D & E Series: Creating new standards
LiuGong D & E Series technology package has been creating new standards for efficiency and control, and takes it to the next level. LiuGong offers small, medium and large excavators ranging from 3 -70 tonnes.
Mehrotra highlights some of the smart features of LiuGong D & E Series as:
• LiuGong excavators are equipped with CAPC which automatically and continuously matches hydraulic output to the ever-changing workload, delivering just the right amount of power needed for the load while metering out the precise amount of fuel.
• Auto Idle system which saves fuel and energy when machine is in idle condition.
• Different operating (economy and power mode) for different work condition, which helps machine performance to perform at its best for that particular application.
• GPS to help track and monitor the utilisation, performance and health of machine.
• The operator can travel and work smoothly and simultaneously, thanks to the straight travel function, which automatically holds the machine in a true line while moving forward.
• Boom and arm anti-drift systems provide superior control for precision jobs, like pipe handling operations. The advanced arm regeneration circuitry adjusts for workload, improving efficiency, fine control and energy savings.
• The multi-function large-screen colour monitor gives the operator simple, accurate information at a glance. Plus, the air conditioning outlets are fully adjustable to fit the needs and comfort preferences of the operator.
• Service points are simple, intuitive and accessible. LiuGong excels at making regular maintenance easy. Filters, coolant reservoirs and battery can all be reached at ground level through the left door. Main electrical components are grouped in the cab, rather than outside, for simple and efficient maintenance checks.

Demand of Tracked Excavators on the rise
Over the past few years, the tracked excavator segment has gained popularity at Indian construction sites. They are now increasingly being used across sectors such as roads and highways, railways, irrigation and mining. “With the government’s continuing thrust on large scale infrastructure projects, we foresee a favourable rise in the demand of Tracked Excavators in the coming years,” observes Jasmeet Singh, Head – Corporate Communications and External Relations, JCB India Limited.

In the excavator segment, JCB presently offers seven different types of models. The range includes JCB30Plus (3-tonne), JS81 (8-tonne), JS120 (12-tonne), JS140 (14-tonne), JCB 220LC Xtra, (22-tonne), JCB 305LC (30-tonne) and JCB370LC (37-tonne).

JCB 30Plus – Reliable and robust with a fast cycle time
The 3-tonne mini excavator – also known as the JCB 30Plus is the latest addition in our excavator portfolio. This power packed machine takes productivity to new heights as it is clearly a leader in its class, when it comes to lifting and stability; combined with high-tractive effort, tracking speed and pushing power. “JCB 30Plus is reliable and robust with a fast cycle time which in turn increases productivity. The machine is an ideal equipment to use in restricted spaces,” explains Jasmeet.

The new JCB 220LC Xtra
The all new 22-tonne excavator, JCB 220LC Xtra, was introduced during the Bauma Conexpo 2016 in Gurgaon. This state-of-the-art machine comes with a gross power of 170 HP and a bucket capacity range of 0.8 cum to 1.2 cum. “It is 8 per cent more fuel efficient. With 8 Power Modes and Smart Controls, this machine is 7 per cent more productive in H+ mode,” claims Jasmeet.

JCB 305LC comes with JCB diesel max engine
Similarly, the JCB 305LC comes with JCB diesel max engine and delivers 221HP for excellent productivity. 222kN of bucket breakout force makes it easy to remove any thing that comes beneath, thereby improving the productivity. Provision of the ECO, power and H+ work mode to suit the job requirement makes it more productive. Innovative hydraulic regeneration system reduces the cycle time and improves productivity.

JCB370LC – A high capacity multi-stage fuel filtration
The JCB370LC heavy tracked excavator is offered by JCB India in the top end range of tracked excavators. According to Jasmeet, the JCB370LC comes with a high capacity multi-stage fuel filtration to further guarantee durability and provides up to 25 per cent fuel conservation than its predecessors.

This entrant is targeted towards the large scale construction and quarrying projects. This machine has a unique and innovative low-level bonnet to provide excellent visibility. The safety level lock fully isolates hydraulic functions to avoid unintended movements. The new excavator is equipped with features such as unique “2 Go” system to ensure safe start of machine operation.

JCB Livelink
Another noteworthy feature in JCB’s range of excavators is the JCB Livelink. This state-of-the-art technology enables users to get SMS alerts on their mobile phones or smart devices regarding service alerts, operations and security of their machines. The information is available in real time regarding the health of the machine including engines and gives vital information to the customer in terms of number of hours the machine has been operational, service intervals, fuel levels, malfunctions if any, etc.

To monitor their machines in real time, JCB has set up a world-class central command centre at the company’s Ballabgarh facility. JCB dealerships have also set up similar Livelink command centres to ensure that real time support is provided to customers. “Over 45,000 Livelink enabled machines are successfully working in India,” informs Jasmeet.

Cat Product Link – A robust remote monitoring and asset management solution
Integrated Cat technology solutions increase production and minimise operating costs. The Cat 320D2 hydraulic excavator is equipped with an advanced technology Product Link part of the suite of Equipment Management Services. Cat Product Link is a robust remote monitoring and asset management solution, enabling powerful tools that transform data from an entire fleet into the essential information required to boost productivity, reduce costs and manage risks. “Product Link’s intuitive interface, VisionLink, makes it easy for a manager to monitor data from the whole fleet and then to zoom in for a detailed look at individual assets,” says Andy Dhanaraj, Director – Sales, Global Construction & Infrastructure Division, Caterpillar India.

He adds, “Optional Grade Control system (GCS) flex allows operators to control the depth of cut and slope of cut through a monitor inside. Operation becomes user friendly and reduces rework and drastically increases productivity overcoming challenges of low visibility and reduced ambient light.”

Cat 320D2 hydraulic excavator: A new engine, powerful hydraulic system
The 320D2 machine features a new engine, powerful hydraulic system, durable main structures and a refined operator station are built to perform flawlessly year after year in quarry, construction and other applications, Andy said while explaining what makes their excavators smart.

The Cat 320D2 hydraulic excavator is engineered for low operating costs, simple routine maintenance, high productivity and long-term durability. Dhanaraj outlines some of the other benefits and features of the Cat 320D2 Hydraulic Excavator as:
• The pilot-type hydraulic system provides low-effort operation and precise control and maximises efficiency.
• Best in class hydraulic output provides best productivity even in the toughest conditions.
• Boom and stick regeneration systems save energy during boom-down and stick-in operations, reducing cycle times and adding to overall fuel efficiency.

“The Cat 320D2 hydraulic excavator is an exceptionally reliable, highly productive machine that lowers operating costs through reduced fuel consumption and simplified routine maintenance,” Andy claims.

The 320D2 uses a Cat C7.1 engine that meets U.S. EPA Tier 2, EU Stage II and china non-road machine emission stage 2 regulations. It is produced at our manufacturing facility in Thiruvallur, Tamil Nadu.

SANY excavators: Equipped with multiple working modes
SANY excavators are precision-engineered to deliver maximum performance with advanced technology and reliable components, claims Dheeraj Panda, Director and Head- Excavator Business Unit, Sany Heavy Industry India. “Our excavators are equipped with multiple working modes that are designed to match engine speed, pump speed and system pressure with application. This provides versatility to the equipment matching the work at hand.”

SANY excavators feature, an intelligent Dynamic Optimisation Matching Control System (DOMCS) that ensures quick response to the change of operating variables in order to achieve optimum engine performance. The DOMCS determines engine output power as per the external load demand facilitating the optimum control of excavator external load operation system.

The next-generation hydraulics in SANY machines ensures that oil flow rate is directly proportional to the joystick operations and output pressure signal. “It directs the flow exactly where you need it and when you need it, to facilitate smoother operation with greater efficiency and better fuel economy. All the equipment works organically with the optimum combination of speed and power,” explains Dheeraj.

The regeneration circuits in the boom and arm function results into faster movement by routing oil through regeneration valve in the main circuit. It prevents cavitation and enhances cylinder performance.