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SAE technical paper series, Volume 820052.
Spark timing is known to be a critical variable for engine performance. It is important to measure timing under transient conditions as well as steady state timing... 
Electronic equipment | Performance tests | Test equipment and instrumentation | Ignition timing | Ignition systems
eJournal
SAE technical paper series, Volume 970837.
VPT (Variable Piston Timing) utilizes a lightweight piston design that varies the piston displacements and the periods of the 4 strokes, produces a power stroke in every revolution... 
Pistons | Diesel / Compression Ignition engines | Gas engines | Natural gas
eJournal
SAE technical paper series, Volume 2007-01-3979.
Conventional measuring systems are not able to measure the exactly valve timing on real engines... 
Computer simulation | Data acquisition and handling | Finite element analysis | Spark ignition engines
eJournal
SAE technical paper series, Volume 820004.
An electronic system for the control of engine ignition timing has been developed for use in studies of the road anti-knock performance of gasolines... 
Knock | Performance tests | Ignition timing | Electrical, Electronics, and Avionics | Ignition systems
eJournal
SAE technical paper series, Volume 780844.
... volume production design. An example is a microcomputer digital spark timing control unit that can be programmed during assembly to match engine specifications... 
Ignition systems
eJournal
SAE technical paper series, Volume 891988.
This paper describes an analysis of the rise in timing belt temperature occuring under high engine speed operation that was made to establish the cause of heat deterioration of the belt materials... 
Performance tests | Thermal testing | Timing belts | Spark ignition engines
eJournal
SAE technical paper series, Volume 940973.
In this paper, new event-based engine control algorithms utilizing more than one reference pulse per cylinder firing event are designed for improved engine spark timing control... 
CAD, CAM, and CAE | Spark ignition engines
eJournal
SAE technical paper series, Volume 2007-01-2526.
In diesel engines, the timing system is normally composed by gears, sometimes with toothed belt and recently with chains... 
Diesel / Compression Ignition engines | Performance tests | Noise
eJournal
SAE technical paper series, Volume 780655.
The spark-Optimizer is a closed-loop type electronic control device that continuously corrects the ignition timing... 
Electronic equipment | Ignition timing | Electromagnetic compatibility
eJournal
SAE technical paper series, Volume 880386.
This paper presents a broad review of the whole subject of variable valve timing applied to both gasoline and diesel engines, including related technology such as the use of supplementary valves... 
Variable valve timing | Maintainability and supportability | Spark ignition engines
eJournal
SAE technical paper series, Volume 980768.
A new fully mechanical valve timing mechanism for continuous control of valve lift, duration and phase angle has been developed... 
Variable valve timing | Kinematics | Valves | Valve trains | Spark ignition engines
eJournal
SAE technical paper series, Volume 910445.
While Variable Valve Timing (VVT) holds the potential to alleviate some of the compromises normally associated with engine operation over broad speed and load ranges, generalizing its benefits in a quantitative manner is difficult... 
Variable valve timing | Exhaust emissions | Vehicle performance | Spark ignition engines | Emissions
eJournal
SAE technical paper series, Volume 770854.
A digital electronic spark timing system has been developed and placed in production for use on the 1978 Oldsmobile Toronado... 
Electronic control systems | Computer simulation | Spark ignition engines
eJournal
SAE technical paper series, Volume 845026.
...) and thereby achieving better engine torque characteristics, improved part load fuel consumption and also reduced emissions This paper presents the Test Results of changing the Valve Timing and Valve... 
Exhaust emissions | Fuel economy | Valves | Spark ignition engines | Camshafts
eJournal
SAE technical paper series, Volume 890680.
... better idle stability, and higher torque at low speed as well as improved fuel economy, if the valve timings... 
Electronic control systems | Noise | Valves | Valve trains | Spark ignition engines | Camshafts
eJournal
SAE technical paper series, Volume 860561.
Test results are presented for a 410 KW (550 HP) single rotor engine at various operating conditions. Gear load vs. rato position is reported as well as... 
Diesel / Compression Ignition engines | Performance tests | Gears | Kinematics | Rotary engines
eJournal
SAE technical paper series, Volume 870471.
This paper will discuss sensors used for ignition timing today and examine a new sensor based upon a technology proven in the automotive market... 
Ignition timing | Sensors and actuators | Ignition systems
eJournal
SAE technical paper series, Volume 2004-01-1869.
.... This paper describes a study on the technology behind the electromagnetic variable valve timing mechanism... 
Diesel / Compression Ignition engines | Variable valve timing | Fuel economy | Valve trains | Spark ignition engines
eJournal
SAE technical paper series, Volume 980769.
VAST is a variable timing system developed for spark-ignition and compression-ignition engines... 
Diesel / Compression Ignition engines | Variable valve timing | Valve trains | Spark ignition engines | Camshafts
eJournal
SAE technical paper series, Volume 2008-01-1778.
An electronic variable valve timing system for a spark ignition engine was designed and built in order to investigate the performance of ideal valve actuation timing and facilitate further research... 
Powertrains | Diesel / Compression Ignition engines | Variable valve timing | Performance tests | Sensors and actuators | Mathematical models | Spark ignition engines | Alternative fuels
eJournal
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