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Mitsubishi to Debut Concept Plug-in Hybrid and Concept Cargo Variant of the i-MiEV at Tokyo Show

PxmievThe PX MiEV. Click to enlarge.

Mitsubishi Motors Corporation (MMC) will be showing a total of 16 cars at the 41st Tokyo Motor Show later in October, including two concept cars: the Mitsubishi Concept PX-MiEV plug-in hybrid and the i-MiEV CARGO. MMC will also show 10 current production vehicles that qualify for eco-car tax incentives in Japan.

MMC Plug-in Hybrid. Powered by the new Mitsubishi Plug-in Hybrid System, the Mitsubishi Concept-PX (plug-in hybrid crossover) MiEV (Mitsubishi innovative Electric Vehicle) returns fuel economy in excess of 50 km/liter (118 mpg US, 2.0L/100km) on the Japanese 10-15 cycle.

The Mitsubishi Concept PX-MiEV’s front and rear wheels are powered by two permanent magnet synchronous motors with combined maximum output of 60 kW (80 hp) and 200 N·m (148 lb-ft) of torque. The vehicle is also fitted with an 85 kW (114 hp), 125 N·m (92 lb-ft) 1.6L DOHC MIVEC gasoline engine which can power the front wheels as well as work as a 70 kW generator. The Mitsubishi Concept PX-MiEV also utilizes the MiEV OS (MiEV Operating System) which selects the optimum drive mode through integrated control of the EV components and the gasoline engine as well as controls optimum electrical charge and output in response to remaining battery energy through constant monitoring of the drive battery. Modes include:

  • EV mode. At low to medium speeds, the Mitsubishi Concept PX-MiEV’s drive battery powers the front motor using front-wheel drive. When driving on snow, in the rain or in other low surface friction situations where maximum vehicle stability is required, the system automatically switches to four-wheel drive mode by feeding power to the rear wheel motor as well when sensors detect any front wheel slip.

  • Series hybrid mode. When the remaining energy in the drive battery falls to a predetermined level the system starts the gasoline engine to generate electricity and automatically switches to the series hybrid mode using the electricity generated to power the motors. In this mode as well, the system switches to four-wheel drive by driving the rear motor depending on driving conditions.

  • Parallel hybrid mode. At higher vehicle speeds the car is supported by the gasoline engine which operates more efficiently than the electric motors at high revolutions. In this mode, the gasoline engine also helps drive the wheels. When the driver makes sudden lane changes or other manoeuvres requiring greater vehicle stability the system switches to four-wheel drive by bringing in the rear motor to drive the rear wheels, improving stability. In addition when overtaking at higher speeds or in other situations requiring faster acceleration the system switches in both front and rear motors to provide additional power and assist the gasoline engine, providing high acceleration.

  • Regenerative mode. When the vehicle is slowing or coasting down a long descending slope the system switches to regenerative mode in which kinetic energy reclaimed from the wheels is stored in the drive battery.

  • Charging mode. As with the production i-MiEV, Mitsubishi Concept PX-MiEV features a 3-way battery charging system using either a 100-volt or a 200-volt domestic supply or a high-power quick-charging station. The system also incorporates a Wireless Charging Program feature that allows the owner to start charging the battery or start the air conditioner at a preset time even when away from the vehicle.

  • Home power supply mode (vehicle-to-home). As a way to maximize the usefulness of the power stored in the drive battery, the Mitsubishi Concept PX-MiEV allows the owner to store electricity at night and then use that electricity via the normal charging connector to power home appliances during the daytime when domestic electricity consumption is highest. This allows the drive battery to be used as a power source in the event of a natural disaster. Should the electricity left in the battery fall below a predetermined level, the gasoline engine starts up and works as generator to maintain the power supply at a fixed level.

    A 100-volt AC auxiliary socket in the rear luggage compartment also allows the electricity stored in the drive battery to be used to power cooking or lighting equipment and other appliances when camping or engaged in other leisure activities.

Mitsubishi Concept PX-MiEV uses Mitsubishi’s S-AWC integrated vehicle handling control system which is configured around an E-4WD (Electronically-powered four-wheel drive) system that controls front and rear motor output to deliver the optimum front/rear drive torque split. Under the integrated control of the S-AWC system are E-AYC (Electric-powered Active Yaw Control), which controls left/right torque split at the rear wheels and the degree of deceleration energy recovery, ASC (Active Stability Control) and ABS (Anti-lock Brake System) components.

Unlike the AYC system on the Lancer Evolution X which uses a wet multi-plate clutch arrangement, E-AYC uses a differential motor to control rear wheel torque split. The use of the differential motor makes for a high-efficiency system with outstanding response and contributes to the on-demand handling and outstanding vehicle stability that characterizes the S-AWC system.

The Mitsubishi Concept PX-MiEV uses a windshield that uses heat-reflecting glass to reduce the amount of heat energy passing through and uses IR- (infrared ray) blocking glass in the door windows. The body paint also incorporates heat-reflective and insulation technology. Inside the vehicle the four seats are individually air conditioned and cabin humidity is regulated. The adoption of these heat load reducing technologies allows efficient climate control while reducing power consumption to the absolute minimum in making for a very comfortable occupant space.

The Mitsubishi Concept PX-MiEV also showcases several new active safety technologies. The “New Multi-around Monitor” system uses cameras located at strategic points on the body to provide the driver with a combined image of the full perimeter of the vehicle. The combined image is displayed for the driver on a monitor from an overhead view for improved safety around the perimeter of the vehicle.

The Mitsubishi Concept PX-MiEV is equipped for the Driving Safety Support System (DSSS (Level II)) currently being promoted by the Japanese National Police Agency. In this advanced vehicle-infrastructure safety support system, an on-board receiver picks up signals transmitted by roadside optical beacons and the system urges the driver to take extra care when other vehicles or pedestrians have been detected by roadside sensors and cameras at intersections and pedestrian crossings.

Employing a system that uses wireless technology to ascertain the position of other vehicles and warn the driver when their proximity so requires, the Mitsubishi Concept PX-MiEV also supports the Advanced Safety Vehicle 4 (ASV4) project being promoted by the Road Transport Bureau of the Japanese Ministry of Land, Infrastructure, Transport and Tourism.

The vehicle is also fitted with a Dedicated Short Range Communications (DSRC) system (5.8 GHz band two-way wireless communication channels specifically designed for automotive use), employing the road-to-vehicle communications capabilities used in Electronic Toll Collection (ETC) to determine the position of the vehicle and whether it is parked or not.

The Mitsubishi Concept PX-MiEV is also fitted with electronically-controlled air suspension that gives the driver the choice of three ride height modes—Auto, High, Low—for improved stability over poor surfaces or at high speeds and for easier access to and from the vehicle.

The i-MiEV CARGO. Click to enlarge.

i-MiEV CARGO. Derived from the production i-MiEV, this concept adds a generous amount of rear free space to the i-MiEV to extend the range of uses to which it can be put by corporate users and self-employed operators in particular. The rear space features space-efficient cubic dimensions to allow the user to exercise their imagination fully in adapting it for whatever use he/she chooses.



The versatile AWD PX MiEV (PHEV) 118-mpg Crossover could be a good seller in USA and Western Canada. It looks BiiiiG enough and it could replace many of the current 20-mpg ICE crossovers while using only 1/4 the liquid fuel and probably with 1/4 the CO2 emission.

Great idea if the price is right.


The PX MiEV looks good. These kinds of products could put the company back on the map and make them profitable in a big way.


Wonder who will move the fastest with mass production of various affordable PHEV/BEV types and sizes.

It could be a very interesting race for the next decade +.

We may all be surpised at what will come out of China's and India's manufacturing facilities in the next few years.

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