2) 5DK-26 type diesel engine
The 5DK-26 type engine with 5 cylinders was developed based on 6DK-26 to fulfill the engine line-up, and its general view and principal particulars are indicated in Photo 2.4.4-2 and Table 2.4.4-2 respectively. This engine was developed for auxiliary engines (generator) as the target, and its rated power is from 1,000 to 1,200kWe at 720/750min-1.
3) Acquisition of verification for NOx emission
The company obtained the statement of compliance for engine air pollution prevention issued by Nippon Kaiji Kyokai, which certifies that DK-20 series engines comply with technical code on control of NOx emission adopted at IMO. In the certification testing, the 6DK-20 type engine was selected as the parent engine.
This application of the engine family concept provides that all engines of DK-20 series, of which rated power cover 400-1,280kW with 3, 5, 6 and 8 cylinders, comply with the approval requirements. Following DK-20 engine, the company intends to obtain the certification with DK-26, DK-28 and DK-36 type engines in the engine family concept.
(2) Annual results of manufacture
(Note: Engines are not less than 100 PS.)
2.4.5 Diesel United, Ltd.
(1) Development of new model
In order to respond to the demand of higher output from the market of RTA48T engine, which is in satisfactory operation as a main engine for the small or medium type bulk carrier and tanker, the first model of RTA48T-B engine, of which output was increased by 7% and of which speed was raised by 3%, was completed in October 1998. After the verification test on the reliability and various performances were carried out, the engine was delivered to the customer.
And furthermore, it is confirmed that the NOx emission of this engine clears IMO's regulation at the standard specification. This engine, 7RTA48T-B (Rated Power: 12,450PS at 114rpm, B.M.E.P: 19bar), was mounted as a main engine on the Panamax type bulk carrier built by Oshima shipbuilding Co., Ltd.
The principles on the development of RTA48T-B type engine are as follows:
1) Power up of RTA48T-type engine in response to a market demand
2) Pursuit of total economy
3) Establishment of high reliability
Table 2.4.5-1 indicates the principal particulars of DU-Sulzer RTA48T-B type engine and Fig. 2.4.5-1 shows the section of the engine.
