NTT INDYCAR SERIES blir hybrid med introduktionen av Energy Recovery System, eller ERS AT Mid Ohio

• The NTT INDYCAR SERIES is going hybrid with the introduction of the Energy Recovery System, or ERS
• Honda Racing Corporation USA to supply Energy Storage Systems for the NTT INDYCAR SERIES field
• The INDYCAR ERS will debut in competition at the Honda Indy 200 at Mid-Ohio presented by the 2025 Civic Hybrid on July 7th

INDYCAR is following on the heels of the Honda Civic, Accord and CR-V, and going hybrid. The introduction of the new Energy Recovery System, or ERS—a collaborative effort between Honda Racing Corporation USA and other suppliers—at the Honda Indy 200 at Mid-Ohio presented by the 2025 Civic Hybrid ushers in a new era of NTT INDYCAR SERIES electrified hybrid racing.

The new INDYCAR ERS hybrid will be combined with the existing 2.2-liter, twin-turbocharged V-6 engine and produce up to an additional 60 horsepower. The hybrid unit will be located within the bell housing area of the car, between the engine and transmission, allowing it to fit within the existing chassis and engine footprint.

Image Credit: Honda Racing Media

About the ERS
The ERS system will be made up of four major components.

• Energilagringssystemet – ESS
  • Produced by Honda Racing Corporation USA, the ESS is a series of 20 supercapacitors—designed by Skeleton—that store the energy harvested by the MGU until its deployment by the drivers. HRC US opted to use a supercapacitor rather than a battery because of its ability to both capture and deploy energy faster. The ESS can fully charge and deploy in approximately 4.5 seconds.
• Motorgeneratoraggregat – MGU Modellnamn: EMPEL 180
  • Produced by EMPEL in collaboration with Ilmor, the Motor Generator Unit, or MGU captures spent energy produced under braking, turning it into electricity to be stored by the Energy Storage System. The MGU is also linked to the driveshaft of the existing Indy car engine—allowing the driver to deploy the harvested energy as additional power.
• DC / DC converter
  • Produced by BrightLoop Converters, the DC / DC converter on the IndyCar ERS ensures that the energy from the ESS or generated by the MGU is output at the correct voltage for the existing powertrain, 12 volts.
• Voltage Control Device
  • Essentially an oversized fuse, the Voltage Control Device is a safety component that ensures the entirety of the system never exceeds 60 volts.

These components will interface with the existing McLaren Applied-provided TAG-400i ECU or Engine Control Unit. Additional software will be used to ensure the correct synchronicity between the ERS and the Honda—or any other manufacturer—provided engines.

How the ERS works on track
ERS fångar upp annars bortkastad energi som genereras vid inbromsning och använder den för att ladda superkondensatorerna i enheten. ‘Regen’-processen kan modereras av teknik eller styras manuellt av föraren. När ESS aktiveras skickar den energin till MGU, som är kopplad till drivaxeln på den befintliga Indy car-motorn, och lägger till upp till 60 hästkrafter till förarens förfogande.

I den automatiska ‘regen’-processen dikterar mjukvara en fast nivå av regenerering som sker medan föraren tävlar. I den manuella ‘regen’-processen har förarna mer kontroll över graden av energiåtervinning. En knapp på ratten aktiverar energiåtervinning med en fast hastighet, medan dragning i en paddel baktill på ratten ändrar mängden regenerering.

The process is the same for oval racing in the NTT INDYCAR SERIES. Despite not often lifting or braking on ovals in qualifying situations, it is common to lift on the ovals when drafting or lining up to execute a pass in race-day scenarios. Therefore, regen will occur often during a race as drivers are setting up their passes. Then, energy can be deployed when they are making the pass.

Deployment of the energy stored in the ERS is activated manually by the driver via a button on the steering wheel.

An additional benefit to going hybrid is the ability for the ERS to start or restart the car without the need for the current external starter. With stalling being a common cause for full-course cautions, the ERS will provide enough power that a driver can restart the car without outside assistance. This will not only reduce the number of yellow and red flag periods, but also the risk safety workers face while attending to a stalled race car on course. The system will always keep some energy in reserve to allow for multiple engine restarts should a driver need it.

ERS Stats

• With additional weight-saving measures within the car, the ERS system adds 42.5 kilograms of weight.
• The ERS system can be charged from a 12 volt source. It can be charged in the shop or on pit lane easily. It can also be charged by the engine itself under idle.
• The ERS in its current form generates approximately 60 additional horsepower, but there is room for upward development if needed.
• The ERS generates 45 Newton-meters of torque.
• Much like the current Indy car engine, the MGU operates at a maximum of 12,000 RPM.
• The amount of energy stored per lap varies by track length and type.
• The ESS has a maximum operating voltage of 60 Volts and 2,000 Amps.
• The ESS can be fully charged or discharged by the driver in approximately 4.5 seconds.
• Föraren har kontroll över ERS:ens laddningsnivå (‘State of Charge’ eller SOC), mellan 60 volt och 30 volt. Även om föraren ’tömmer’ ESS:en på laddning, kommer 30 volt att finnas kvar för att kunna starta bilen igen vid avstängning eller motorstopp.

The first race with the new Energy Recovery System in place will be the Honda Indy 200 at Mid-Ohio presented by the 2025 Civic Hybrid, July 7th at 1:30 PM ET on NBC.

For more information on the INDYCAR Energy Recovery System, see the HRC US YouTube channel: The INDYCAR Hybrid Tech Series, Episode 1: Getting to Know the INDYCAR Hybrid System (youtube.com)

About Honda Racing Corporation USA
Honda Racing Corporation USA (HRC US) har en rik tradition av att skapa, tillverka och stödja Honda Racing och Acura Motorsports-kunder sedan grundandet 1993 som Honda Performance Development. Från toppklassig racing i INDYCAR och IMSA Sports Cars till kommersiella racingprogram, driver HRC US drömmarna hos professionella och amatörförare från 4 till 40+ år. HRC US är ett helägt dotterbolag till American Honda Motor Co., Inc. och leder alla Hondas och Acuras högpresterande racingprogram i Nordamerika.

HRC US specialiserar sig på design och utveckling av drivlinor, chassi, elektronik och prestandadelar, samt teknisk support och support vid tävlingar. Företaget erbjuder även delar och tävlingssupport till amatör- och professionella motorsportförare inom Honda och Acura; och utökar kontinuerligt sitt utbud av racingprogram som gör Honda racingprodukter tillgängliga för alla racingstilar, från karting och Quarter Midgets till de högsta nivåerna av professionell racing. HRC US-titeln ersatte Honda Performance Development den 1 januari 2024, för att återspegla företagets nya roll i Hondas globala racinginsatser.

… anteckningar från SP

#EVHNews, #Honda Racing, #INDYCAR, #ERS, #IMSA Sports Cars