![]() ![]() Multi-Point Injection (MPI) with TD04 turbocharger.It brought good fuel economy and, if well serviced, long engine life. A partially cleaned up version (with less power) was later sold in Europe, and was among the first of the modern GDI engines. This GDI model saw a production of over a million units though it was a heavy polluter therefore only sold in the Japanese market. In mid 1996 Mitsubishi released a gasoline direct injection (GDI) version of the 4G93. The 4G93 is a 1.8 L (1,834 cc) engine available in both SOHC and DOHC versions. The turbocharged 4G93 engine in a Mitsubishi Libero GT. ![]() ![]() (2): General export and later European versions with 14°/58° intake and 52°/16° exhaust valve timing.(1): Early European and JDM versions with 20°/42° intake and 54°/2° exhaust valve timing.A modular displacement (MD) version of the 4G92 MIVEC was also produced – MD is Mitsubishi's cylinder deactivation system which helps improve fuel consumption. Power output was raised as high as 170 PS (125 kW 168 hp), as found in the JDM Mirage Cyborg-ZR and 1992 Lancer MR, making it one of the most powerful 1.6-litre naturally aspirated engines. Later, a fuel-efficient SOHC version was added, but the 4G92 is best known in its high-performance MIVEC equipped DOHC version, which fully replaced "ordinary" DOHC in 1993. In the original DOHC 16V form it produces 120 PS (88 kW 118 hp). The 4G92 is basically a version of the 4G91 with the bore increased to 81 mm (3.19 in). It first appeared in the late-1991 Japanese-spec Mirage RS and Super R in DOHC form. The 4G91 was a short-lived model, mainly built between 19 and rarely seen in export markets. With a 9.5:1 compression ratio and DOHC, four-valve-per-cylinder head and multi-point EFI, this engine produces 115 PS (85 kW 113 hp) at 6,000 rpm and 135 N⋅m (100 lb⋅ft) at 5,000 rpm. Some feature MIVEC variable valve timing, and it was the first modern gasoline direct injection engine upon its introduction in August 1996. All are 16-valve, and use both single- and double- overhead camshaft heads. The Mitsubishi 4G9 engine is a series of straight-4 automobile engines produced by Mitsubishi Motors. Motor vehicle engine Mitsubishi 4G9 engine
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