Aiming to reduce life cycle CO2 emissions to zero

Our efforts to reduce life cycle* CO2 emissions to zero by 2050 revolve primarily around the Energy-saving Study Group and the Production Technology Sub-Committee. We are working to reduce emissions by developing medium-to-long-term emission reduction scenarios, and production technologies that emit less CO2.

Working in collaboration with JAPIA (Japan Auto Parts Industries Association), we have created an LCA calculation tool for assessing life cycle CO2 reductions during product development and begun to conduct assessments of our major products.

We have also begun to examine our existing activities, identify production technology innovation topics and formulate reduction scenarios with the introduction of renewable energy, with a view to reducing overall CO2 emissions by 2030. We are also advancing the installation and introduction of photovoltaic (solar) power generation and other renewable energy technologies at Group companies, as one important source of power for the future.

* Every process including extracting resources, processing raw materials, manufacturing, consuming and disposing of products

Effective utilization of solar energy [Art Metal Mfg.]

Nagano-based Art Metal Mfg. and four other Japanbased Art Metal Mfg. group companies utilize the geographical characteristics of their local areas—long daylight hours and low rainfall—to engage in photovoltaic solar power generation. Making use of sloped surfaces on factory roofs and parking areas, the companies generate a combined total power output of 1.72 MW. In fiscal 2018, the group generated 2,100 kWh of power, achieving an effective reduction of approximately 870 tons in CO2 emissions.

Solar cells on the Art Metal Mfg. building
Solar cells on the Art Metal Mfg. building
Akira Nishibayashi, who is responsible for solar cell control in the Processing and Production Technology Department
Akira Nishibayashi, who is responsible for solar cell control in the Processing and Production Technology Department
Total CO2 emissions per sales (Global)
Total CO<sub>2</sub> emissions per sales (Global)

* Past values have been revised due to a change in the range of tabulated data.

Total CO2 emissions due to transport per sales
(Consolidated companies in Japan)
Total CO<sub>2</sub> emissions due to transport per sales (Consolidated companies in Japan)

The index used for emissions per sales is calculated on the assumption that the base year for targets set out in the Sixth Environmental Action Plan is equal to 100.

Emissions of non-CO2 greenhouse gases (Global)

(t-CO2)

FY2015 FY2016 FY2017 FY2018
SF6 4,302 11,400 5,700 4,560

Reducing office power usage using a geo-power system [Aisin Seiki]

At Shinkawa Plant, Aisin Seiki has introduced a geopower system that makes of geothermal heat—which remains stable throughout the year—to reduce other energy usage.

The system uses heat exchangers to cool (or heat) outside air, which is sucked down to a depth of 5m underground, and then uses fans to deliver the air to rooms in its office buildings as a form of auxiliary air conditioning. By supplementing conventional air conditioning in this way, the system achieves reductions in main power usage. Passing the air through the end of underground pipes also enables the system to deliver a clean, comfortable airflow, thereby contributing to improving the workplace environment.

<Office building power usage>
Environmental improvements due to introduction of the geo-power system
<Office building power usage> Environmental improvements due to introduction of the geo-power system
Katsunori Ota, who is responsible for the geo-power system at the Shinkawa Plant
Katsunori Ota, who is responsible for the geo-power system at the Shinkawa Plant

Clean energy plant that has introduced renewable energy and energy-saving technologies [Aisin Seiki]

In August 2017, Aisin Seiki constructed an additional south building within the premises of its Nishio Die-Casting Plant to increase production capacity. The new building was designed to improve product quality, increase productivity, and ensure safety and a better working environment for its employees, with the aim of “achieving a world-leading die-casting plant through technological and human innovation.”

In terms of global environmental aspects, despite handling die-casting processes that typically consume large amounts of energy and emit large volumes of CO2, the new building significantly reduces energy consumption in terms of both building facilities and production equipment. As a result of these improvements, Aisin Seiki expects to reduce CO2 emissions for the other die-casting plants by over 50% in comparison with fiscal 2015.

Members of the Plant & Environment Engineering Department responsible for building facilities
Members of the Plant & Environment Engineering Department responsible for building facilities
Members of the Light Metal Engineering Department responsible for production equipment
Members of the Light Metal Engineering Department responsible for production equipment

CO2-reducing items

Building facilities Production equipment
  • LED lighting and flashing light controls throughout all buildings
  • Use of natural daylighting
  • Photovoltaic power generation
  • Collection and use of waste heat
  • 15 other improvements
  • Introduction of highly insulating furnace materials
  • Automated hot water distribution gutter heating method
  • Hydraulic control reduces standby power usage
  • Elimination of conveyance between processes
  • 11 other improvements

Reducing CO2 emissions through the introduction of BDF

AISIN Group is working to reduce CO2 emissions by utilizing Biodiesel Fuel (BDF)—made by collecting and refining food oils used in employee cafeterias—in its transport vehicles.

Since 2008, AISIN Group has utilized commuter buses that transport employees between the nearest station (or employee dormitory) and the workplace during commuting hours. We currently operate two BDF buses, achieving an annual CO2 reduction of around 25 tons per year.

Additionally, in fiscal 2018, we also commenced trail operation of BDF for trucks used to transport parts and other products manufactured by AISIN Group. With the full-scale introduction of these BDF trucks in fiscal 2019, we expect to reduce annual CO2 emissions by approximately 105 tons per year (with two trucks).

In addition to reducing CO2 emissions, BDF transport vehicles make effective use of waste and are also friendly to the atmosphere. Moving forward, we will continue to further expand their use within the Group.

A truck owned by Hekinan Unso Co., Ltd. being refueled with BDF at a gas station operated by Konan Kogyo Co., Ltd.
A truck owned by Hekinan Unso Co., Ltd. being refueled with BDF at a gas station operated by Konan Kogyo Co., Ltd.

Developing a low-cost, high-efficiency new type of solar cell [Aisin Cosmos R&D]

Aisin Cosmos R&D conducts research and development in various technological areas, including biological, chemical and human technologies. The company is currently engaged in R&D efforts to develop Perovskite solar cells, which have already achieved power generation efficiency in excess of 15%, reaching a level that is comparable with silicon solar cells.

Moving forward, Aisin Cosmos R&D will continue utilizing organic pigment synthesis technologies accumulated thus far to develop organic semiconductor materials for use in solar cells that offer durability at low cost, while clearing various issues such as cost, durability and material safety.

Personnel responsible for solar cell development
Personnel responsible for solar cell development
A solar cell
A solar cell

Developing software to achieve reductions in CO2 emissions [Aisin ComCruise]

Aisin ComCruise, which develops and evaluates control software for automobile onboard hardware and other devices, develops software for various products. In particular, the software is greatly contributing to reducing CO2 emissions at the product usage stage, in which a lot of CO2 is emitted. The company will continue to advance development of the software.

Personnel responsible for control software development
Personnel responsible for control software development
Product name Details of energy savings
Hybrid transmission 6.8% reduction in CO2 emissions in comparison with previous models
High-capacity RWD 10-speed Automatic Transmission 6% reduction in CO2 emissions in comparison with 8-speed transmission
Reducing CO2 emissions with high-efficiency ENE-FAR Power plant: 40% energy usage
efficiency → ENE-FARM: 87% energy
usage efficiency or higher, and
approximately 1.5 ton reduction in
annual CO2 emissions

Eco Product certification

To facilitate the development of environmentally friendly products, Aisin Seiki has established a scheme whereby it selfcertifies products with superior environmentally friendly characteristics as Eco Products. In fiscal 2018, the COREMO B2 Model household cogeneration system was certified as an Eco Product under the scheme. Looking ahead, we will continue to increase the number of Eco Products and work on development that is more conscious of the global environment.

Features

COREMO can reduce CO2 emissions by approximately 1.0 ton annually, compared with conventional hot-water heaters (gas hot-water supply heaters) for use in cold regions. The B2 model reduces the volume of consumed resources by achieving approximately a 13% weight reduction from the B1 model, becoming a more environmentally friendly product.

Details of resources conserved

Reduction in volume of resources consumed due to weight reduction

B1 model B2 model
Lifecycle resource consumption (kg) 282.5 229.5
Improved resource conservation efficiency 8.47 10.94
Resource conservation factor [index] 1.30
COREMO

Comment from developer

In the B2 model, we have improved the exhaust heat recovery circuit and control system for heating devices, abandoned the use of a cooling water tank for heat accumulation and significantly reduced the volume of coolant used, which presented difficulties in terms of recycling. We also sought to reduce the amount of resources consumed by advancing weight reduction of the system, such as by integrating the chassis components and engine air intake/exhaust components. As a result of these efforts, we have achieved a reduction in resources consumed while at the same time maintaining product performance.

Energy Engineering Department Masahiko Iida
Energy Engineering Department
Masahiko Iida