New 2.5 liter In-line 6 Engine with High Output & Good Fuel Economy

摘要

Using the well-respected 1JZ-GE engine as a base, we have employed intelligent variable valve timing (VVT-i) and also improved the intake and exhaust systems, starting with a stainless-steel long exhaust manifold, to achieve approximately 10% higher performance over the entire range from low to high speed. By reducing friction through the use of VVT-i, a higher compression ratio, and titanium nitride-coated shims, and by using a torque converter with a flexible lock-up system, we have achieved an 18% increase in fuel economy.