HORSE Powertrain Solutions, a division of HORSE Powertrain Ltd and a leader in innovative and low-emission powertrain systems, has started a production run of 1.2-litre, three-cylinder turbo-charged petrol engines for use in plug-in hybrid-electric vehicles (PHEVs).
The proven HORSE ‘HR12’ engine can deliver peak power of 110kW (152PS) and maximum torque of 230Nm. The new PHEV-optimised HR12 units will be produced at HORSE’s plant at Valladolid in Spain. There, HORSE is initially targeting production of 1,200 units per month, with a maximum possible production capacity of 6,875 engines per month. The HR12 PHEV variant will be first used in the upcoming Renault Rafale E-Tech 4x4 Hybrid.
Development of the HR12’s PHEV variant began in July 2021, with HORSE having invested 4 million euros in its Valladolid plant to modify and scale its assembly line. This has included a 260,000 euro investment in people and staff, creating 345 jobs.
HORSE CEO Patrice haettel said: “This HR12 is the first plug-in hybrid engine manufactured at our Valladolid facility and the second produced by HORSE globally. This is a major landmark for our team, and proof of how HORSE’s internal combustion engine expertise can facilitate market-leading, low-emission mobility solutions. With outstanding range and efficiency, this PHEV architecture showcase the direction of the automotive industry and the value of HORSE’s indispensable technology leadership to our partners.”
Alongside the HR12 internal combustion engine, the complete powertrain unit will also feature three electric motors – two main, and one secondary: the first main electric motor on the front axle, delivering 50kW of power and 205Nm of torque; the second main electric motor on the rear axle, delivering 100kW and 195Nm; and a secondary HSG (High-voltage Starter Generator) electric motor producing 25kW and 50Nm.
Altogether, this will mean the PHEV’s maximum power output will be over 220kW (300hp), driven by a specially adapted and clutchless multi-mode gearbox. The PHEV’s energy will be stored in a 400-volt lithium-ion battery, with a total capacity of 22kWh. Altogether, this means the powertrain will deliver a pure-electric range of over 100km for the Rafale E-Tech 4x4 Hybrid.
The PHEV’s superior efficiency will mean that the new Rafale 4x4 will achieve superior emissions performance. In electric mode, it will achieve an average fuel consumption of just 0.7 litres per 100km, with CO
2 emissions of only 15g/km.
HORSE was created to provide highly efficient, low-emission engines, transmissions, and technologies to meet the varying power generation needs around the world. HORSE operates eight production plants across seven countries, three R&D centres and a head office based in Madrid, Spain – the company produces 3.2 million units per year for its customers worldwide.