KUBOTA TECHNICAL REPORT No.55 JANUARY 2022

A growing world population has resulted in a rapidly increasing demand for food. Thus, the need for agricultural machinery has increased, given that it plays an important role in stabilizing the food supply. A key feature of European agriculture is the use of cutting edge technology to attain high crop yields. Kubota had already introduced the 97-127 kW rated M7 series tractor in response to these needs for large row-crop operations. The majority of medium sized operations in Europe are mixed farmers who both produce crops and raise livestock, sometimes using the crops as feed. Among these farmers, high yield per-hectare and ease of use are important. In addition to the M7, Kubota has now developed the 91-106 kW rated M6002 series tractors for the European market with a particular focus on being a good fit for mixed farmers.

• Control Lever Layout
• Closed Center Load Sensing Hydraulic System

There is growing demand within ASEAN countries for better harvesting performance for grain corn along with the growing market for this product due to government-supported policies to achieve self-sufficiency through domestic production and reducing imports. The customer need perfect harvester that can be enhancing about working capacity, low fuel consumption, low header loss, lodged corn harvesting ability to support working. Corn header is one of solution of the enhance requirement.
KUBOTA Research and Development Asia (KRDA) developed corn header CH70 focusing on greater compactness & flexible size, a header that is lightweight and easy to install, that supports the global policy of zero burn after harvest, has a reasonable price, and with performance superior to all other competitors. Due to its special features, corn header CH70 helps the customer to reduce operational costs and generate a higher income compared to the harvesters of competitors. CH70 can meet the above requirements and can also increase the market share of Kubota’s harvesting machines in ASEAN countries, as well as increasing sales and expanding marketing networks to support the future business growth of both customers and Kubota.

• Corn Header
• Combine Harvester
• Compact
• Blade shape
• Zero burn

As the global emission regulations have become more stringent recently, a DPF that filters PM in exhaust gas is becoming essential for diesel engines. Engines equipped with a DPF must carry out DPF regeneration that burns and removes PM, but generator engines that operate unmanned cannot be stopped during DPF regeneration. Therefore, it is required that a DPF can be regenerated under all operating conditions even where the exhaust temperature is low. In this study, the development of Kubota’s original exhaust gas heating system using an exhaust heating catalyst and exhaust throttle enables regeneration under all operating conditions. In addition, this study solved the problem that low load operation sometime causes both white smoke and DOC clogged during generator use.

• Diesel Engine
• Electrical Generator
• PM
• DOC
• DPF
• Exhaust Heating Catalyst
• Exhaust Throttle Valve

The mini excavator RDL3 series for the European market is new model 5 to 5.5t class machine that complies with European Stage V emission regulations. Inheriting the basic performance of the previous model, which was well received by the market, such as operability, stability, durability, lifting capacity, and digging power, the new model delivers the comfort that has been strongly demanded by the market in recent years and upgrades the equipment to increase product competitiveness and expand market share. In terms of comfort, we have achieved the industry’s top class quietness (ear noise) for mini backhoes. In the equipment upgrade, we have developed a new user interface (UI) that can be operated intuitively.

• Mini Backhoe
• European Emission Regulations Stage V
• Ear Noise
• User Interface

A feeder is a device for continuously supplying a constant flow rate of various powdery and granular materials in order to meet specific resin mixing ratios. Conventionally, resin products have been produced in process by blending a small amount of additives with other materials in advance and supplying them from a feeder to an extruder. On the other hand, in order to improve productivity, there was a need to eliminate the prior blending process and to add a trace amount directly to the extruder. In response, we have developed a new micro NX feeder. The NX feeder series is a proprietary feeder developed by Kubota. In addition to making use of its structural features, we have developed technologies to improve the supply accuracy, expand the flow rate range, expand the range of applicable materials, reduce the installation area, and achieve the target specifications. This paper explains these development technologies.

• Feeder
• High Supply Accuracy
• Micro Flow Rate
• Supply of Very Small Amount
• High Accurately Weigh and High Stability
• Bridge Material

Despite efforts to renew and build earthquake-resistant pipelines, the ratio of aging pipes increases year by year, so acceleration of renewal is required. However, in addition to manpower shortage, construction companies spend a lot of time on various documents to submit. On the other hand, water utilities are concerned about the drop in level of the construction management, and require secure jointing work according to the manual and reliable measurement records. In order to solve these problems, we have developed “Water work information system (WWIS)”, “Site Checker” and “Site Angle”. WWIS can encourage secure works and automatically create documents using portable terminals, Site Checker can measure positions of a rubber gasket and send to WWIS, and Site Angle can automatically measure joint deflection angles.

• water pipe construction
• earthquake-resistant ductile iron pipe
• IoT
• improvement of quality and efficiency of constructions

For manhole pumps for sewage pumping, which are distributed over a wide area, the adoption of cloud monitoring systems has increased recently in order to improve management efficiency. However, due to the huge amount of operational data acquired, it is difficult for maintenance managers to check daily, and even if an abnormal operating condition occurs, they are not aware of it and are forced to take emergency measures after a failure occurs. Therefore, Kubota has developed an abnormal operation detection system using AI / machine learning technology. Since AI analyzes operation data on behalf of humans and notifies abnormal conditions, maintenance managers can perform efficient preventive maintenance. In this paper, in addition to the details of the two AI functions developed, the effectiveness of these functions demonstrated in the B-DASH project of the MLIT will be described.

• AI
• Machine Learning
• IoT
• Manhole Pump
• Preventive Maintenance

Sewage treatment plants whose discharge destination includes closed water areas are required to remove nitrogen, and a discharge regulation of <5 mg/L of T-N in treated water is set for some facilities. The conventional advanced treatment process for such high-efficiency denitrification significantly increases the treatment cost, power consumption, and installation space compared to the secondary treatment process, such as conventional activated sludge process. To solve this, we have developed a new MBR enabling high-efficiency denitrification that saves cost, energy, and space. This method enables the denitrification of ≈3 mg/L of T-N using multistep processing that arranges four sets of single-step MBRs in series; each having one anoxic tank and one aerobic tank. By eliminating the need to install a postdenitrification tank and by integrating the aerobic tank and membrane tank, construction costs for civil engineering and blower facilities as well as air diffusion amount can be reduced. Moreover, operating this method with the existing secondary treatment process in the advanced treatment is expected to decrease the cost and construction period required for advanced treatment to comply with the regulation equivalent to ≤10 mg/L of T-N.

• MBR
• Cost-Saving
• Energy-Saving
• Space-Saving
• High-Efficiency Denitrification

In recent years, there has been an increasing need for energy saving technology from the viewpoint of global environmental conservation, and sewage treatment plants are no exception. Fluidized bed incinerators have been widely used as sewage sludge volume reduction technology, but the high consumption of electricity has been an issue. We developed a method utilizing a turbocharger that significantly reduces the amount of electricity consumed by a sludge incineration facility.

• Energy Saving Technology
• Turbocharger
• Fluidized Bed Incinerator
• Sludge Disposal