May. 08, 1984

TOYOTA MARKETS NEW CARINA FWD 4-DOOR SEDAN

Introducing the World's First Ultra-Lean Combustion Control System
Achieves Lowest Fuel Consumption in the 1.6 Liter Class

 

TOYOTA MOTOR CORPORATION placed on sale throughout the country on May 8 a new, highly economical and sporty "saloon for the new age," the Carina FWD 4-door Sedan. Improvements were also made in other models of the Carina Series, which were introduced at the same time.

The Carina FWD 4-door Sedan was developed as a direct response to the strong demand from customers for an economical and sporty "urban sedan."

The FWD (Front-wheel drive) system introduced on this model has been added to the existing RWD (Rear-wheel drive) system of other models in the Carina Series to meet the needs of an even wider segment of the market.

The Carina Series now comes in the following configurations
Body Variations
CARINA FWD 4-DOOR SEDAN 1600ST-X

CARINA FWD 4-DOOR SEDAN 1600ST-X

Carina FWD 4-Door Sedan
The following achievements were principle goals in developing the Carina FWD 4-door Sedan
  1. An attractive, unique style―"the urban sedan"
    A wide and low silhouette achieved by wide tread and low vehicle height, and improvements in aerodynamic characteristics through "aero-parts," has created the ideal urban sedan, replete in functional beauty.
  2. The most spacious interior in its class
    Such features as the introduction of FWD have provided more interior room and larger luggage space.
  3. Top fuel economy to complement Carina's traditional sporty handling
    1. The following four types of high-performance, low-fuel-consumption engines are mounted in the Carina FWD 4-door Sedan
  1. Two newly developed systems are used in the new Carina FWD 4-door Sedan engines
    • The world's first *ultra-lean combustion control system, the T-LCS (Toyota Lean Combustion System), which utilizes "fine ceramics" for the lean combustion oxygen control sensor, has been adopted for the 4A-ELU engine mounted in the 1600 SG models.

      As a result, the 1600 SG achieves the best 1.6 liter-class fuel consumption performance, at 17.0 km/liter in the Ministry of Transport (MOT) I0-mode test (5-speed manual transmission), and 28.0 km/liter over a set course at 60km/h (5-speed manual transmission, MOT standards).

      *T-LCS (Toyota Lean Combustion System)

      This system has improved fuel consumption efficiency, and at the same time lowered emission of nitrogen oxides (NOx). This Toyota-developed fuel combustion system achieves an air-fuel mixture ratio of 23:1 or more (a level previously considered to be quite difficult technically to attain), and maintains perfectly stable combustion. This performance is made possible by refinement of three technologies: feedback control of the air-fuel mixture, a swirl control valve, and **Program Independent Injection. The system's use of a lean combustion control oxygen sensor, to enable accurate air-fuel mixture feedback control, marks the world's first commercialization of this sophisticated technology.

      The lean mixture sensor, constructed from "fine ceramics," which have attracted widespread attention lately as a promising new industrial material, functions by obtaining an electric current value proportional to the density of oxygen.

      Adopting this system on the 1600SG 4A-ELU engine has improved fuel consumption by approximately 20%.

      **Program Independent Injection
      The extreme precision of the T-LCS fuel injection system required a new injection control that utilizes a microcomputer to determine the optimum timing of fuel injection based on the position of each cylinder.
  • T-LCS: Realization of Extra-Lean Combustion
    T-LCS: Realization of Extra-Lean Combustion
  • Structural Schematic of Lean Mixture Sensor
    Structural Schematic of Lean Mixture Sensor
  • The 1S-iLU contains the world's first variable air induction system, the Acoustic Control Induction System (ACIS), to improve the actual torque range. Complementing the ACIS, the 1 S-iLU has a large-volume air chamber in the induction passage and a control valve regulated by engine revolutions.
  • Diagram of ACIS System
    Diagram of ACIS System
  • ACIS Torque Characteristics
    ACIS Torque Characteristics
  1. A 2-way, overdrive-equipped, 4-speed automatic transmission is adopted for all engines to provide superior fuel efficiency and drivability (a 2-way, 3-speed, automatic transmission has been designed for models with the 3A-LU engine).
  1. An independent, 4-wheel strut suspension system and variable power steering (relative to engine rpm) provide superior drivability and smooth operation along with greater riding comfort.
  1. Attractive, functional new features
    The following new features are available as standard or optional equipment on the Carina FWD 4-door Sedan
    1. "Aero-parts": front and rear spoilers and side mudguards for improved aerodynamics;
    2. A sharp, full-color liquid crystal instrument panel for greatly improved visibility;
    3. A tilt-and-slide electric sunroof which offers both comfort and ventilation, through use of a new tilt-up mechanism;
    4. A slide-controlled ventilator which permits direct airflow through vents located on both sides of the instrument panel;
    5. Easy fold-back, collapsible rear-view door mirrors.
Carina RWD
  1. For the first time on the Carina Model, highly durable, two-color urethane bumpers are used.
  2. The technology for applying body paint has been changed, so that the visual effect of each of the Carina's several choices of colors is one of accentuated liveliness.
  3. Changes in materials used in the interior also give the Carina a richer, more sporty personality.
  4. Easy fold-back, collapsible rear-view door mirrors have been mounted, and
  5. A rear spoiler is mounted on the 4-door Sedan.
Major Specifications: Carina FF 4-Door Sedan

Downloads (Images)

  • CARINA FWD 4-DOOR SEDAN 1600ST-X
    CARINA FWD 4-DOOR SEDAN 1600ST-X