Categories: F1 Technical InsightFeature

How much does each power unit component weigh?

You’ll find below the simplified list of parts that are involved in the hybrid engine design along with their weight in tokens according to Appendix 4 of the 2015 Formula One technical regulations.

Caption	Component	Weight
1	Engine water pumps	1 token
2	Oil scavenge system	1 token
3	MGU-H – Complete system	2 tokens
3	MGU-H – position	2 tokens
4	Turbocharger – Compressor	2 tokens
5	Turbocharger – Turbine	2 tokens
6	Inlet system – plenum	1 token
7	Inlet system – Trumpets and associated parts	1 token
8	Inlet system – Throttles and associated parts	1 token
9	Injection system	2 tokens
10	Ignition system	1 token
11	Cylinder head	2 tokens
12	Energy Store (ES) – Battery cells	2 tokens
12	Battery Management System (BMS)	2 tokens
12	ERS – Cooling/lubrication	1 token
12a	ERS – Wiring loom	1 token
13	MGU-H – Power electronics	1 token
14	MGU-K – Power electronics	1 token
15	Oil tank	1 token
16	Oil pressure pumps	1 token
16	All parts in which circulates oil under pressure	1 token

PU components have been broken down into two tables for better readability on both illustrations.

Caption	Component	Weight
17	Crankcase – cylinder bore spacing, deck height, bank stagger*	2 tokens
17	Crankcase – all other dimensions	3 tokens
18	MGU-K	2 tokens
18	MGU-K – position, transmission	2 tokens
19	Crankshaft – Crank throw, main bearing journal diameter, etc*	2 tokens
19	Crankshaft	2 tokens
20	Con rods	2 tokens
21	All parts defining combustion – Piston crown, chamber, etc.	3 tokens
21	Pistons	2 tokens
22	Valves	2 tokens
22	Valve drive	2 tokens
23	Pneumatic valve return system	1 token
24	Valve drive/camshaft – from camshaft lobe to gear train	1 token
25	Valve drive – Gear train	2 tokens
26	Exhaust system	1 token
26	Wastegate	1 token
27	Electrical system	1 token
28	Covers – cam-timing covers, cam covers, etc.	1 token
29	Ancillaries drive	3 tokens
30	Friction coatings	1 token
31	Sliding or rotating seals	1 token
	Total :	66 tokens

*PU components that have been totally frozen by the FIA ahead of 2015

Nicolas Carpentiers

Nicolas Carpentiers is F1i.com's resident technical expert, providing in-depth technical analysis and casting his critical eye across the developments of the teams throughout the season.