ZMZ-24

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The ZMZ-24 was an automobile engine produced by Zavolzhye Engine Factory (Zavolzhye Motorni Zavod, ZMZ) in the Soviet Union.

The ZMZ-24 was an aluminium-block overhead valve (OHV) inline four design, an evolution of the ZMZ-21A, displacing 2,445 cc (149.2 cu in), and in its initial appearance, produced with chain-driven camshaft and compression ratio of 6.6:1; it produced 70  hp (52  kW ; 71  PS ) at 4,000 rpm and 123  lb⋅ft (167  N⋅m ) at 2,200 rpm. [1] It was also produced as the UMZ 4178.10. [2]

It "quickly became the mainstay of the Soviet engine industry", [3] and would be used in a variety of vehicles.

The improved ZMZ-24D, found in the GAZ-24, ran on 92 RON gasoline (while the ZMZ-24-01 could use commonly available 76 octane, and the ZMZ-24-07 could use liquid propane). [4] The cylinder block was die cast, instead of the slower coquille for the 21A. The engine featured a twin-choke carburettor, with a higher compression ratio, producing 95  hp (71  kW ; 96  PS ) at 4500 rpm and an even more impressive 186  N⋅m (137  ft⋅lbf ) of torque at 2200–2400 RPM.

By 1970, the ZMZ-24 had been renamed the ZMZ-402.10, with a lower-compression 4021.10 version, which remained in limited production until 2006. [3] In this format, it was used in the RAF minibus and ErAZ van. [5]

It also served as the basis for the sixteen-valve 131  hp (98  kW ; 133  PS )2,287 cc (139.6 cu in) ZMZ-4062.10 (seen in some Volgas after 1996), the 145  hp (108  kW ; 147  PS )2,463 cc (150.3 cu in) ZMZ-40552.10 (used in GAZ's commercial vehicles), the 2,690 cc (164 cu in) ZMZ-409.10 of the UAZ Patriot, and the ZMZ-5143 diesel all derive from the ZMZ-24. [2]

Notes

  1. Thompson, Andy. Cars of the Soviet Union (Haynes Publishing, Somerset, UK, 2008), p.62.
  2. 1 2 Thompson, p.130.
  3. 1 2 Thompson, p.129.
  4. Thompson, p.128.
  5. Thompson, pp.129-130.

Sources

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