This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Development of the Directly Actuated Variable Valve Control System
Technical Paper
1999-01-3319
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
New valve control system (HYPER VTEC:Variable Valve Timing and Lift Electronic Control System) having valve inactive mechanism which engine power is made to be united to the environment conservation was developed for motorcycle engines of sport type having higher engine speed. Mass increase in the valve operating system of this system is kept to a minimum with a compact, simple mechanism. The system enables high engine speed up to 13,500 rpm without abnormal motion of valves, having high reliability and durability. In addition, the valve control system has the enhancement of fuel economy and the effect of decreasing the intake and exhaust system sound during 2-valve operation. The switching mechanism part of the operating valve number was manufactured by cold forging, and has decreased costs. This system has been adopted to the sport type motorcycle CB400SF for domestic model in 1999.
Recommended Content
Technical Paper | Automotive Engine Control Sensors’80 |
Technical Paper | Knock Detector System Controlling Turbocharger Boost Pressure |
Technical Paper | Model Predictive Control of Turbocharged Gasoline Engines for Mass Production |
Authors
Citation
Tsukui, T., Tsutsumizaki, K., and Nakajima, M., "Development of the Directly Actuated Variable Valve Control System," SAE Technical Paper 1999-01-3319, 1999, https://doi.org/10.4271/1999-01-3319.Also In
References
- Inoue Kazuo et al. “A high power, wide torque range, efficient engine with a newly variable - valve - timing and lift mechanism.Part 1. Development of variable valving system” JSAE, 891004 1989
- Yamashita Hiroshi et al. A method of enhancing wear resistance of cam and follower system in engine valve train HONDA R&D Technical Review 2 210 219 1990