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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... 
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... 
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. Due to their requirements, the measurement procedure and... 
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. It does... 
Knock | Performance tests | Ignition timing | Electrical, Electronics, and Avionics | Ignition systems
eJournal
SAE technical paper series, Volume 780844.
Automotive companies are presently designing microprocessor based electronic products. The cost effectiveness of large scale integrated (LSI) microcomputers... 
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... 
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... 
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. But for trucks and buses, vans and... 
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; in effect it re-tunes the engine some ten... 
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... 
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. Any valve lift and duration... 
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... 
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. This system consists of an... 
Electronic control systems | Computer simulation | Spark ignition engines
eJournal
SAE technical paper series, Volume 845026.
A twin cam engine with separate camshafts for inlet and exhaust valve operation provides the possibility of altering the relative angular position of the two... 
Exhaust emissions | Fuel economy | Valves | Spark ignition engines | Camshafts
eJournal
SAE technical paper series, Volume 890680.
There has been a general trend recently toward applying double overhead camshafts (DOHC) and four valves per cylinder to automotive engines to obtain better... 
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. Hall effect... 
Ignition timing | Sensors and actuators | Ignition systems
eJournal
SAE technical paper series, Volume 2004-01-1869.
In recent years, increasing attention has been paid to a non-throttling technology that is expected to contribute to a reduction in fuel consumption. This... 
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. It makes variable control of the intake and exhaust valves... 
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... 
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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