Furthermore, in order to secure easy maintenance and higher reliability with the compact engine, the various novel designs were adopted including tin-aluminum alloy main bearings and twin “staybolts” for compaction, and the high-top land piston, CPR (Controlled Pressure Relief) ring and deep cylinder cover for higher reliability. At the same time, the number of cylinder-cover tightening bolts were reduced from 16 to 8, and the holding-down bolts were moved to the outside of the bed-plate for easy maintenance.
(2) Annual results of manufacture
2.4.3 Kobe Diesel Co., Ltd.
(1) Development of new model: Nil
(2) Annual results of manufacture
2.4.4 Daihatsu Diesel Mfg. Co., Ltd.
(1) Development of new model
1) 6DK-36 type diesel engine
The general view and the principal particulars of the engine are indicated in Photo 2.4.4-1 and Table 2.4.4-1 respectively. The engine is equipped with in-line type 6 cylinders derived from the V-type 12DK-36 type engine of the maximum output in the company, and at the same time 8DK-36 type engine was also developed. These engines were developed focusing on the excellent reliability, excellent durability and great extension of the maintenance interval in the same manner as the other DK series engines.
The environmental maintenance in the engine room was also taken into consideration, achieving the remarkably low noise and vibration level compared with those of the conventional engines. The “product friendly to the earth” is the target of the company, and this low NOx engine clears the international standard on NOx emission, and further, the fuel consumption of 177g/kWh is on the top class for this category.
These engines are most suitable for not only the main engine in the marine field which is the targeted market, but also for the generator engine for the electric propulsion ship which has been extensively talked about. And furthermore, they can be served for the generator engine in regular service all over the world.
