Low emissions, responsive performance
The e:HEV powertrain consists of two compact, powerful electric motors that work alongside an Atkinson-cycle 1.5-litre DOHC i-VTEC petrol engine, a lithium-ion battery and an innovative fixed-gear transmission coupled to a power control unit. The system benefits from advancements made over 20 years of hybrid development in Honda road cars and in Formula 1®.
For its installation in the Honda HR-V, the e:HEV's power is boosted from 109PS as found in the Jazz, to a total power output of 96kW (131PS) and 253Nm of torque.
The e:HEV system in the HR-V is more compact than in the Jazz, and has a higher degree of energy density that enables it to generate greater torque. The number of cells in the battery has been increased by 25%, allowing greater storage and deployment of electric power over the 80kW Jazz, with the power control unit (PCU) now downsized and integrated into the engine compartment, and water cooled instead of air cooled, for improved heat management. The gear ratio between the electric motor and wheels has also been lowered, which further improves the HR-V's dynamic performance.
The effect is an effortless and comfortable journey, whether travelling through urban areas or cruising at high speed on motorways. The Honda HR-V produces CO2 emissions from 122 g/km (WLTP), returns fuel economy of 5.4l /100km (WLTP), and accelerates from standstill to 62mph / 100km/h in 10.6 seconds.
Optimised drive modes
What sets the e:HEV system apart is how its three drive modes seamlessly interchange to ensure optimum performance of each component in both urban and motorway driving. The intelligent Electronic Control Unit automatically, and constantly, cycles between Electric Drive, Hybrid Drive or Engine Drive depending on which is the most fuel-efficient drive mode at that specific driving situation.
When driving at a constant high-speed, such as on the highway, the system operates on engine drive as that is the most efficient for that scenario. If further acceleration is required, such as when overtaking, the car will switch to hybrid drive for that additional performance boost. Additionally, when in Hybrid Drive, power from the petrol engine-driven generator can be diverted to recharge the battery, offering additional efficiency benefits.
'Sport' mode can be activated via the drive selector, enabling even sharper throttle response, whilst 'Econ' mode adjusts the air conditioning system and throttle response for an emphasis on fuel efficiency. In addition to 'Normal' mode, where the car is best balanced between both worlds, drivers can switch across all driving modes at the toggle of a switch.
EV-like responsiveness
For an increased EV-like experience, drivers can also select B-range from the transmission, which offers selectable levels of energy recovery when coasting or braking. The level of energy recovery and the resulting strength of the deceleration effect can be substantially increased over the regular D-range, by using the paddles behind the steering wheel.
The transfer between these drive modes - including the start of the engine to generate electric power - is virtually unnoticeable to the occupants. Rather than using a conventional power-split system with a planetary gearbox which causes high levels of friction, the fixed-gear transmission creates much less friction, ultimately leading to less energy consumption when driving purely electric.
Crucially, Honda's highly efficient fixed-gear system also achieves a higher proportion of accumulated electric drive time when in cities than other hybrids on sale today.
Applying Formula 1® hybrid expertise
Using engineering expertise from its motorsport team, Honda's race-winning Formula 1 Hybrid Power Unit programme has inspired the technology in the e:HEV hybrid system to deliver unrivalled levels of energy efficiency on the road. As a result, the new e:HEV HR-V offers exceptional efficiency and power output in a wide range of driving conditions.
Hybrid heritage
The original 1999 Honda Insight established Honda as a world leader in hybrid technology. The first hybrid model from any manufacturer to be sold in Europe, it introduced the brand's Integrated Motor Assist (IMA) system, which relied mainly on the engine and called upon electric motor assistance and brake energy recuperation to enhance acceleration and reduce fuel consumption.
Honda has continued to develop its hybrid technology, and the advanced two-motor e:HEV system is now used in the Jazz, CR-V, all-new HR-V and upcoming 11th-generation Civic.
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