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All the Mazda rotary engines have been praised because of their light weight. The unmodified 13B-MSP Renesis Engine has a weight of 112 kg (247 lb), including all standard attachments (except the airbox, alternator, starter motor, cover, etc.), but without engine fluids (such as coolant, oil, etc.), known to make 157–175 kW (211–235 hp).
The Mazda RX-8 Hydrogen RE is a 2003 bi-fuel version of the RX-8 sports car, in which the twin-rotor wankel rotary engine is configured to run on either hydrogen or gasoline. This is the fifth Mazda vehicle to be fitted with a hydrogen wankel rotary engine .
For the North American market, Mazda revised the reported output rating of the standard and high-power Renesis soon after launch to 189 hp (141 kW) and 237 hp (177 kW), respectively. [10] With exhaust ports now located in the side housing, the Renesis had improved fuel efficiency and emissions rating over the 13B-REW employed by the preceding ...
The Renesis in the Mazda RX-8 has the highest redline of a production wankel rotary-engine road car rated at 9000 rpm. In contrast, some older OHV (pushrod) engines had redlines as low as 4800 rpm, mostly due to the engines being designed and built for low-end power and economy during the late 1960s all the way to the early 1990s. One main ...
Mazda's strength since the 1960s has been in its line of Inline-4 engines. Beginning with a tiny 358 cc kei car engine, one of the smallest ever made, Mazda continues to this day to be a leading developer of this type of engine. OHV engine – 358 cc–1.2 L OHV I4 (1961–1974) xC engine – 1.0 L–2.0 L SOHC I4 (1965–1983)
Mazda's RX-8 car with the Renesis engine (that was first presented in 1999), met in 2004 the United States' low emissions vehicle (LEV-II) standard. [53] This was mainly achieved by using side porting: The exhaust ports, which in earlier Mazda rotary engines were located in the rotor housings, were moved to the side of the combustion chamber.
Dieseling or engine run-on is a condition that can occur in spark-plug-ignited, gasoline-powered internal combustion engines, whereby the engine keeps running for a short period after being turned off, drawing fuel through the carburetor, into the engine and igniting it without a spark.
In spark-ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but when one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.