Jakarta –
The PO Sinar Jaya Inter-City Inter-Province Bus (AKAP) for the Jakarta-Surabaya (PP) route using the Hino RN285 Common Rail chassis was tested on the way on the Trans Java Toll Road. Hino conducted a test session to measure the engine oil temperature of the Hino RN 285 Bus that crosses the Trans Java toll road.
Testing using the Graphtec Digital Logger Monitoring device. During testing, Hino DX II data monitors bus speed, engine speed (rpm), engine coolant temperature and fuel consumption. The Hino RN285 Common Rail bus tested carried 33 passengers with full luggage capacity.
The bus departs from Pulogebang Terminal, Jakarta to Purabaya Terminal, Surabaya via the Trans Java Toll Road. From the results of the data monitor during testing, the Hino RN 285 Bus shows an oil temperature of 119.5 ° Celsius. This indicator is below its standard flash point, which is 230° Celsius.
In testing, the bus’s highest engine speed reached 2,762 rpm. The top speed can reach 143 km / h. Meanwhile, the lowest rpm is at the level of 2,321 and the lowest speed is at 107 km/hour.
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Sinar Jaya Bus Tested on Trans Java. The top speed reaches 143 km / h, but the engine does not overheat. Photo: Doc. Hino– |
“The test results show that the engine remains stable and its temperature is maintained, even though the use of oil is less on the Hino Bus RN285 engine compared to other brands. This makes it more operationally efficient for autobus companies, because expenses for regular engine oil replacement are more efficient,” said Santiko. Wardoyo, Chief Operating Officer (COO), Director of PT Hino Motors Sales Indonesia (HMSI).
It is said that the Hino RN 285 bus chassis has a lubrication hole technology called the oil gallery on the piston. The technology works to cool.
“This oil gallery hole will increase the cooling efficiency of the engine when compared to a bus engine with a piston type without an oil gallery. For a piston equipped with an oil gallery, 50% of the heat generated from the piston will be transferred to lubricating oil or oil,” explained Santiko.
Irwan Supriyono, After Sales Director of HMSI said, Hino Bus RN 285 uses 15W-40 lubricant specifications. The oil consumption for each change is only 12.7 liters. “Meanwhile, other brands require more than 29 liters of oil each time it is replaced,” he said. The periodic oil change period on the Hino Bus RN285 is also longer, i.e. every 20,000 km.
 Sinar Jaya Bus Tested on Trans Java. The top speed reaches 143 km / h, but the engine does not overheat. Photo: Doc. Hino– |
Specifically, the Hino RN285 Bus uses a 7,684 cc diesel engine type J08E-VT commonrail 6 cylinder in-line direct injection with turbocharged aspirated. The machine can spit out a maximum power of 285 PS at 2,500 rpm. Commonrail engine technology uses high pressure in injecting fuel to produce perfect combustion and has advantages such as greater engine power and torque, more efficient fuel consumption, and lower exhaust emissions.
On the Hino Bus Hino RN285, the injector uses Diamond Like Carbon (DLC) material which is resistant to friction so that it is claimed to be more durable and reduce the effects of wear and tear. The use of this DLC material includes needle, valve and command piston components.
The Hino Bus RN 285 uses a ladder frame type chassis and is equipped with air suspension. The total length of this bus can reach 11.85 meters. Buses can be maximized to carry passengers up to 55 people.
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(rgr / din)
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