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Dry sump engines in some drag racing cars use scavenging pumps to extract oil and gases from the crankcase. [18] A separator removes the oil, then the gases are fed into the exhaust system via a venturi tube. [citation needed]. This system maintains a small amount of vacuum in the crankcase and minimises the amount of oil in the engine that ...
Exhaust emissions can be reduced by making use of clean vehicle propulsion. The most popular modes include hybrid and electric vehicles. As of December 2020, China had the world's largest stock of highway legal plug-in electric passenger cars with 4.5 million units, representing 42% of the world's stock of plug-in cars. [19] [20]
The car was to be able to accelerate from 0–60 mph (0–97 km/h) in a maximum time of 11.5 seconds. The engine was to develop no less than 130 hp (97 kW), travel 7,500 mi (12,100 km) before requiring an oil change, go 100,000 mi (161,000 km) before requiring major maintenance, run for five minutes after a major cooling system failure, and ...
1993–97 3.5 L engines are a non-interference design, in which the valves will not collide with the pistons in the event of a timing belt failure. The 1998–2001 3.2 L, the 1998–2010 3.5 L, and the 2007–2011 4.0 L engines are interference designs.
The 2016 Chevrolet Malibu Hybrid car features an Exhaust gas Heat Recovery (EGHR) system to accelerate coolant heat up time. This gives faster heat up of the engine coolant which in turn heats up the engine faster. Less fuel is used giving reduced emissions. This will also quicken cabin heating warm up for passenger comfort and window defrosting.
[3]: 4 As the piston continues downward, it uncovers the air intake ports again, which helps to displace exhaust gases. This is an example of uniflow scavenging ; since the intake air enters at slightly greater than atmospheric pressure, the blower also assists in scavenging spent combustion gasses at the end of the power stroke.