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The MBECS-II is equipped with an accumulated-pressure hybrid system consisting of a hydraulic pump and accumulator, which is capable of changing the kinetic energy of the vehicle into hydraulic pressure during braking and converting it to drive force when starting or during acceleration. This system reduces the load on the diesel engine, thereby improving fuel efficiency and reducing exhaust emissions.
Compared to standard buses, the MBECS-II emits 24% less NOx, 67% less PM, and 50-60% less black smoke (on acceleration at start). Additionally, in combination with a system that turns off the engine automatically when the bus is stopped, fuel efficiency in city driving is improved by 17%. |
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| Storage location | : | － | |
| Year manufactured | : | 1995 | |
| Manufacturer | : | Mitsubishi Fuso Truck and Bus Corporation (Then, Mitsubishi Motors Corporation) | |
| Classification | : | Mass-production vehicle | |
| Current status | : | Mass-production vehicle | |
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| Vehicle name / Manufacture |
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| Vehicle name | : | New Aerostar MBECS-II & III Large Size Route Buses |  |
| Model name | : | KC-MP237K | |
| Company name | : | Mitsubishi Fuso Truck and Bus Corporation (Then, Mitsubishi Motors Corporation) | |
| Year manufactured | : | 1995 | |
| Designed by | : | Mitsubishi Fuso Truck and Bus Corporation (Then, Mitsubishi Motors Corporation) | |
| Collaboration | : | Uchida Hydraulics Co., Ltd. (now Bosch Rexroth, Japan) | |
| Vehicle type/usage | : | Route bus | |
| Location of actual vehicle/replica | : | － |
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| Model / Weight |
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| Style | : | Route bus | |
| Number of doors | : | 2 | |
| Passenger capacity | : | 81 (27 seated, 53 standing, 1 crew member) | |
| Vehicle weight | : | 10,240 kg | |
| Gross vehicle weight | : | 14,695 kg | |
| Points of interest, topicality | : | With an eye on meeting long-term exhaust emissions in advance, development aimed to significantly increase fuel efficiency and reduce exhaust emissions. |
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| Body / Size |
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| Structure | : | Monocoque | |
| Bumpers | : | Provided | |
| Step | : | Front: 380 + 220 + 215 mm, Rear: 400 + 245 + 245 mm | |
| Overall length | : | 10140 mm | |
| Overall width | : | 2490 mm | |
| Overall height | : | 3055 mm | |
| Tire size | : | 11.1-20-16PR | |
| Features | : | － |
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| Body / Axle / Driving / Others |
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| Frame | : | Monocoque | |
| Front axle | : | Reverse Elliot type | |
| Rear axle | : | Full floating type | |
| Wheelbase | : | 4800 mm | |
| Front tread x rear tread | : | 2015 mm×1815 mm | |
| Vehicle height adjustment | : | Adjustable | |
| Steering | : | Ball nut with servo unit type | |
| Main braking system | : | Hydraulic compound type, leading trailing | |
| Parking brake | : | Mechanical propeller shaft internal expansion brake | |
| Stabilizer | : | None | |
| Driving stability devices | : | Cylindrical single-acting type |
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| Engine / Size / Power |
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| Engine name | : | 6D24 | |
| Cooling/cylinder arrangement | : | Inline 6/4-cycle water cooled | |
| Valve train | : | Overhead valve, intake: 1; exhaust: 1 | |
| Bore x stroke | : | 130.0×150.0 mm | |
| Displacement | : | 11.945 L | |
| Max. power/r.p.m. | : | 240 ps/2200 rpm | |
| Max. torque/r.p.m. | : | 85 kgfm/1400 rpm | |
| Exhaust emissions treatment | : | Oxidation catalyst | |
| Fuel tank capacity | : | 160 L |
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| Hybrid |
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| Hybrid system type | : | Diesel accumulator type | |
| Motor type | : | Hydraulic pump motor type: Swash plate axial plunger type | |
| Motor rated voltage | : | Hydraulic pump motor capacity: 0 to 125 cc/rev variable | |
| Drive battery type | : | Hydraulic pump motor max. working pressure: 34.3 MPa | |
| Number of drive batteries | : | Accumulator type: Piston type | |
| Drive battery capacity | : | Accumulator capacity: 46 L x 2 |
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| Drive-train |
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| Transmission | : | Constant mesh type 5-speed | |
| Drive system | : | 4×2 |
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| Reference materials | : | Mitsubishi Motors Technical Review No.8, No.9 | |
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